Words That Start With U

1,028 words Words by letter Checked 9 Oct 2026

These words that start with U come from a standard English dictionary used for word games, ranked by how often each word is used in everyday writing. There are 1,028 words starting with U on this page. The 100 most common come first, each with a short meaning, followed by shorter, longer and easier picks and a filter for any ending or length.

U has 1,028 words. A big share begin with "un", which often means not, as in "unable" and "unfortunately". Spotting that prefix helps readers work out new words fast.

"Under" and "up" are handy position words for younger children. "University" and "universe" share the root "uni", meaning one, which makes a nice link for older students. "Useful" and "unique" are good describing words to add to a writing toolkit.

Words starting with U: 1,028
Most used: up
Longest common one: unconstitutional 16 letters
Nouns, verbs, adjectives: 170, 73, 608

Most common words that start with U

Ranked by how often the word appears in English text. "Type" is the word's main part of speech.

#	Word	Meaning	Type
1	up	spatially or metaphorically from a lower to a higher position	adv.
2	us	North American republic containing 50 states - 48 conterminous states in North America plus Alaska in...	noun
3	use	put into service; make work or employ for a particular purpose or for its inherent or natural purpose	verb
4	under	located below or beneath something else	adj.
5	until	no short meaning listed
6	using	put into service; make work or employ for a particular purpose or for its inherent or natural purpose	verb
7	university	the body of faculty and students at a university	noun
8	understand	know and comprehend the nature or meaning of	verb
9	usually	under normal conditions	adv.
10	upon	no short meaning listed
11	union	an organization of employees formed to bargain with the employer	noun
12	unless	no short meaning listed
13	unit	any division of quantity accepted as a standard of measurement or exchange	noun
14	understanding	the cognitive condition of someone who understands	noun
15	unique	radically distinctive and without equal	adj.
16	upper	higher in place or position	adj.
17	useful	being of use or service	adj.
18	update	modernize or bring up to date	verb
19	user	a person who makes use of a thing; someone who uses or employs something	noun
20	urban	relating to or concerned with a city or densely populated area	adj.
21	un	an organization of independent states formed in 1945 to promote international peace and security	noun
22	unfortunately	by bad luck	adv.
23	usual	occurring or encountered or experienced or observed frequently or in accordance with regular practice or...	adj.
24	unable	(usually followed by `to') not having the necessary means or skill or know-how	adj.
25	upset	disturb the balance or stability of	verb
26	universe	everything that exists anywhere	noun
27	ultimately	as the end result of a succession or process	adv.
28	unlike	marked by dissimilarity	adj.
29	ultimate	furthest or highest in degree or order; utmost or extreme	adj.
30	unknown	not known	adj.
31	universal	of worldwide scope or applicability; ; - Christopher Morley	adj.
32	uncle	the brother of your father or mother; the husband of your aunt	noun
33	unusual	not usual or common or ordinary	adj.
34	ugly	displeasing to the senses	adj.
35	upcoming	of the relatively near future	adj.
36	uniform	clothing of distinctive design worn by members of a particular group as a means of identification	noun
37	underground	under the level of the ground	adj.
38	unlikely	not likely to be true or to occur or to have occurred	adj.
39	utility	a company that performs a public service; subject to government regulation	noun
40	uh	no short meaning listed
41	upgrade	rate higher; raise in value or esteem	verb
42	ultra	(used of opinions and actions) far beyond the norm	adj.
43	unexpected	not expected or anticipated	adj.
44	usage	the act of using	noun
45	ugh	no short meaning listed
46	unemployment	the state of being unemployed or not having a job	noun
47	unity	an undivided or unbroken completeness or totality with nothing wanting	noun
48	useless	having no beneficial use or incapable of functioning usefully	adj.
49	uncomfortable	conducive to or feeling mental discomfort	adj.
50	unnecessary	not necessary	adj.
51	unfair	not fair; marked by injustice or partiality or deception	adj.
52	urgent	compelling immediate action	adj.
53	um	no short meaning listed
54	unfortunate	not favored by fortune; marked or accompanied by or resulting in ill fortune	adj.
55	urge	force or impel in an indicated direction	verb
56	unlimited	having no limits in range or scope; - Philip Rahv	adj.
57	unbelievable	beyond belief or understanding	adj.
58	underneath	on the lower or downward side; on the underside of	adv.
59	unhappy	experiencing or marked by or causing sadness or sorrow or discontent	adj.
60	uncertainty	being unsettled or in doubt or dependent on chance	noun
61	utterly	completely and without qualification; used informally as intensifiers	adv.
62	upside	the highest or uppermost side of anything	noun
63	uncertain	lacking or indicating lack of confidence or assurance	adj.
64	upload	transfer a file or program to a central computer from a smaller computer or a computer at a remote location	verb
65	underwear	undergarment worn next to the skin and under the outer garments	noun
66	unto	no short meaning listed
67	unconscious	not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead	adj.
68	unclear	poorly stated or described	adj.
69	underwater	beneath the surface of the water	adj.
70	unemployed	not engaged in a gainful occupation	adj.
71	unite	act in concert or unite in a common purpose or belief	verb
72	unlock	open the lock of	verb
73	umbrella	a lightweight handheld collapsible canopy	noun
74	undoubtedly	without doubt; certainly	adv.
75	unacceptable	not adequate to give satisfaction	adj.
76	unaware	(often followed by `of') not aware	adj.
77	uncommon	not common or ordinarily encountered; unusually great in amount or remarkable in character or kind	adj.
78	underway	currently in progress	adj.
79	unstable	lacking stability or fixity or firmness	adj.
80	upstairs	on a floor above	adv.
81	undergraduate	a university student who has not yet received a first degree	noun
82	uranium	a heavy toxic silvery-white radioactive metallic element	noun
83	utter	articulate; either verbally or with a cry, shout, or noise	verb
84	unprecedented	having no precedent; novel	adj.
85	undergo	pass through	verb
86	unpleasant	disagreeable to the senses, to the mind, or feelings	adj.
87	unrelated	lacking a logical or causal relation	adj.
88	unwanted	not wanted; not needed	adj.
89	undercover	conducted with or marked by hidden aims or methods	adj.
90	unusually	to a remarkable degree or extent	adv.
91	unreasonable	not reasonable; not showing good judgment	adj.
92	unsure	lacking self-confidence	adj.
93	upwards	spatially or metaphorically from a lower to a higher position	adv.
94	utilize	put into service; make work or employ for a particular purpose or for its inherent or natural purpose	verb
95	unchanged	not made or become different	adj.
96	understandable	capable of being apprehended or understood	adj.
97	upright	in a vertical position; not sloping	adj.
98	uprising	organized opposition to authority; a conflict in which one faction tries to wrest control from another	noun
99	undertake	enter upon an activity or enterprise	verb
100	unpaid	not paid	adj.

Easy words that start with U for kids

Everyday words most children meet early, good for spelling lists and word games.

use
under
until
using
upon
union
unless
unit
unique
upper
useful
update
user
urban
usual
unable
upset
unlike
uncle
ugly

Short words that start with U

Two to four letters.

up
us
use
upon
unit
user
un
ugly
uh
ugh
um
urge
unto
ut
umm
undo
urn
ump
urea
uta
uric
ursa
uke
udo
ulan
ulna
unde
unai
ulu
updo

5 letter words starting with U

under
until
using
union
upper
urban
usual
upset
uncle
ultra
usage
unity
unite
utter
unfit
usher
undue
uncut
unify
ulcer
unmet
usurp
unzip
usury

All 5 letter words that start with U, with a Wordle helper

Long words that start with U

Ten letters or more.

university
understand
understanding
unfortunately
ultimately
underground
unexpected
unemployment
uncomfortable
unnecessary
unfortunate
unbelievable
underneath
uncertainty
unconscious
underwater
unemployed
undoubtedly
unacceptable
undergraduate
unprecedented
unpleasant
undercover
unreasonable
understandable
unsuccessful
undertaking
unfinished
unexpectedly
underestimate

Words that start and end with U

Filter all 1,028 words that start with U

Narrow the full list by ending, letters inside and length. The list updates as you type.

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Questions people ask

How many words start with U?

This list has 1,028 words starting with U, taken from a standard word-game dictionary and limited to words that appear in real English text.

What are the most common words that start with U?

up, us, use, under, until, using, university, understand are the most used in everyday English.

What are some long words that start with U?

university, understand, understanding, unfortunately, ultimately.

What are easy words that start with U for kids?

up, us, use, under, until, using are short, everyday examples.

Source: the ENABLE word list (a public-domain dictionary used for word games), ranked by how often each word appears in English text (the open wordfreq project), with short meanings from Princeton WordNet. Offensive words are left out.

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