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Words That Start With SYN

96 words Words by letter Checked 9 Oct 2026

Here are 96 words that start with syn, from everyday words to rare ones that are still valid in word games. Common words come first with a short meaning, then the words are grouped by length, which helps with Wordle and crossword clues.

Words starting with syn
96
Most used
syndrome
Shortest
sync
5 letter words
4

Common words that start with syn

#WordMeaningLetters
1syndromea complex of concurrent things8
2syntheticnot of natural origin; prepared or made artificially9
3syncmake synchronous and adjust in time or manner4
4synthesisthe process of producing a chemical compound (usually by the union of simpler chemical compounds)9
5syntaxthe grammatical arrangement of words in sentences6
6syndicatea loose affiliation of gangsters in charge of organized criminal activities9
7synonymous(of words) meaning the same or nearly the same10
8synopsisa sketchy summary of the main points of an argument or theory8
9synoda council convened to discuss ecclesiastical business5
10synthesizedcombine so as to form a more complex, product11
11synergythe working together of two things (muscles or drugs for example) to produce an effect greater than the sum...7
12synonymstwo words that can be interchanged in a context are said to be synonymous relative to that context8
13synchronizedmake synchronous and adjust in time or manner12
14synonymtwo words that can be interchanged in a context are said to be synonymous relative to that context7
15synchronizationthe relation that exists when things occur at the same time15
16syndicatedjoin together into a syndicate10
17synaptic(neuroscience) of or involving synapses8
18synchronousoccurring or existing at the same time or having the same period or phase; - Jour.A.M.A.11
19synthesizecombine so as to form a more complex, product10
20syncingmake synchronous and adjust in time or manner7
21syncedmake synchronous and adjust in time or manner6
22syndromesa complex of concurrent things9
23synergiesthe working together of two things (muscles or drugs for example) to produce an effect greater than the sum...9
24synapsesthe side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis8
25syntacticof or relating to or conforming to the rules of syntax9
26synthesizeran intellectual who synthesizes or uses synthetic methods11
27syndicationorganizing into or administering as a syndicate11
28synapsethe junction between two neurons (axon-to-dendrite) or between a neuron and a muscle7
29syndicatesa loose affiliation of gangsters in charge of organized criminal activities10
30synchronizemake synchronous and adjust in time or manner11
31synergisticused especially of drugs or muscles that work together so the total effect is greater than the sum of the two...11
32synchrotroncyclotron in which the electric field is maintained at a constant frequency11
33synchronisedhappen at the same time12
34synchroa system consisting of a generator and a motor so connected that the motor will assume the same relative...7
35synthesizingcombine so as to form a more complex, product12
36syntheticsa compound made artificially by chemical reactions10
37synthesizersan intellectual who synthesizes or uses synthetic methods12
38synopticpresenting a summary or general view of a whole8
39synchronicitythe relation that exists when things occur at the same time13
40syncsmake synchronous and adjust in time or manner5
41synchronythe relation that exists when things occur at the same time9
42synchronizingmake synchronous and adjust in time or manner13
43synodsa council convened to discuss ecclesiastical business6
44synovialrelating to or secreting synovia8
45syncopea spontaneous loss of consciousness caused by insufficient blood to the brain7
46synchronisationthe relation that exists when things occur at the same time15
47synonymythe semantic relation that holds between two words that can (in a given context) express the same meaning8
48syncopatedomit a sound or letter in a word10
49syndicalisma radical political movement that advocates bringing industry and government under the control of labor unions11
50synesthesiaa sensation that normally occurs in one sense modality occurs when another modality is stimulated11

4 letter words that start with syn

  • sync
  • syne

5 letter words that start with syn

  • synth
  • synod
  • synch
  • syncs

6 letter words that start with syn

  • syntax
  • synths
  • synced
  • synods
  • syngas
  • syndic

7 letter words that start with syn

  • synergy
  • synonym
  • syncing
  • synapse
  • synchro
  • syncope
  • synched
  • synodic
  • synodal

8 letter words that start with syn

  • syndrome
  • synopsis
  • synonyms
  • synaptic
  • synapses
  • synoptic
  • synovial
  • synonymy
  • synching
  • synopses
  • syntagma
  • syncline

9 letter words that start with syn

  • synthetic
  • synthesis
  • syndicate
  • synagogue
  • syndromes
  • synergies
  • syntactic
  • synchrony
  • syntheses
  • syncretic
  • syncytial
  • synodical
  • synovitis
  • synergism

10 letter words that start with syn

  • synonymous
  • syndicated
  • synthesize
  • synagogues
  • syndicates
  • synthetics
  • syncopated
  • synthetase
  • syncretism
  • synecdoche
  • synchronic
  • synergetic
  • syndicator

11 letter words that start with syn

  • synthesized
  • synchronous
  • synthesizer
  • syndication
  • synchronize
  • synergistic
  • synchrotron
  • syndicalism
  • synesthesia
  • syndicalist
  • synthesizes
  • synchronise
  • syncopation
  • syntactical
  • syndicating
  • synchronism

12 letter words that start with syn

  • synchronized
  • synchronised
  • synthesizing
  • synthesizers
  • synonymously
  • syndicalists
  • synchronizer
  • synchronizes
  • synaesthesia
  • syndications

Filter all 96 words that start with syn

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    Questions people ask

    How many words start with syn?

    This list has 96 words starting with syn, all from a standard word-game dictionary and all seen in real English text.

    What are common words that start with syn?

    syndrome, synthetic, sync, synthesis, syntax, syndicate, synonymous, synagogue.

    What 5 letter words start with syn?

    synth, synod, synch, syncs.

    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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