The extension of summer vacation delighted the children.
Source: tatoeba (24333)
Extension
/ɪkˈstɛnʃən/
Synonyms for "extension" (431 found)
Ranked by relevance and common usage.
Closest matches (87)
Noun(14 words)
denotationelongationprolongationadditionsaddonamplificationsannexannexaannexeannexesappendingassignment extensionbranch budcharter renewal
accessaccessionaccessoryaccompanimentaccretionaccrualaccruementaccumulationacreageaddendaaddendumadditamentadditionadditiveadditoryadditumadjunctadjuvantadvanceaffective meaning
Show 53 more words
aggrandizementalternatealternative schoolambitampliationamplificationamplitudeannexannexationappanageappendageappendantappendixappreciationappurtenanceappurtenantareaarmascentattachmentaugmentaugmentationballooningbearingbignessblab schoolbloatingblockboarding schoolbodyboomboostbreadthbroadeningbuildupbulkcalibercalibratecall boxcapacitycentral schoolcirclecodacoin telephonecoloringcoming aftercompasscomplementcomprehensivenessconcomitantconnotationconsecutionconsecutiveness
Strong matches (129)
consequenceconsolidated schoolcontinualnesscontinuancecontinuationcontinuation schoolcontinuingcontinuitycontinuumcorollarycorrespondence schoolcountry day schoolcoveragecrescendodame schoolday schooldenotationdeploymentdepthdescent
Show 84 more words
desk telephonedevelopmentdial telephonediameterdimensiondimensionsdispersiondistancedistensiondrawing outdriftedemaeffectelevationellelongationemptinessempty spaceenduranceenlargementessenceevening schoolexpanseexpansionextensivenessextentextrapolationfanning outfieldfinishing schoolfixtureflareflexfloodfollowingfootageforcefree schoolgaingalactic spacegaugegirthgistgrammatical meaninggreateninggreatnessgrowthgushheighthikehikingideaimpactimplicationimportincreaseincrementinfinite spaceinfinityinflationinformal schoolintensioninterstellar spacejumpllargenessleaplengthlengtheninglengthinesslexical meaninglinelineagelinear measureslingeringliteral meaninglogical sequencelong timelongitudelongnessmagnificationmagnitudemaintenancemass
Noun(22 words)
contcontdcontinuancescontinuationsdata file extensionellselongationsenlargingexpandingexpansionsextendingextension fieldextension phoneextension serviceextrapolationsfield extensionfile name extensionfilename extensionfurthergrace
Show 2 more words
lengthen the deadlinelengthiness
Adjective(2 words)
elastic stretchlinguistic denotation
Verb(1 words)
Related words (215)
meaningmeasuremeasurementmileagemountingmouthpiecemultiplicationnight schoolnongraded schoolnothingnessoffshootopen classroom schoolorbitorderorder of successionouter spaceoverall lengthoverhangovertonepay station
Show 147 more words
pendantpensionatperpetuationperpetuityperseverancepersistencepertinencephonepithplatoon schoolpointposterioritypostpositionpractical consequenceprivate schoolprocessionprocrastinationproductionproductivenessprogressprogressionprogressive schoolprojectionproliferationprolongationproportionproportionsprotractionpublic schoolpublic telephonepurportpursuancepurviewpush-button telephoneradiusraiseraisingramificationrangerange of meaningreachreal meaningreceiverreferencereferentreinforcementrelationrelevancerepetitionrespiteriserotationrunscaleschool without wallsscopesemantic clustersemantic fieldsensesequenceseriesside effectside issuesignificancesignificationsignificatumsignifiesizesnowballingspacespanspan of meaningspatial extensionspecial schoolspherespiritsplaysprawlspreadspreadingspreading outstaying powerstorefront schoolstraight coursestrainstreet academystretchstretchingstringing outstructural meaningsubjunctionsubstancesuccessionsuccessivenesssuffixationsumsum and substancesummer schoolsuperficial extensionsupplementsurfacesurgesustained actionsustenancesweepswellswellingsymbolic meaningtailpiecetelephonetelephone boothtelephone engineeringtelephone extensiontelephone mechanicstelephone receivertelephonicstelephonytenortensiontotality of associationstracttransferred meaningtransmittertumescenceunadorned meaningundergirdingundertoneuninterrupted courseunion schoolunremittingnessupuppingupsurgeupswinguptrendupturnvacation schoolvaluevoidvolumewall telephonewaxingwaywideningwidthwingyardage
Noun(43 words)
moddingoutgrowthsoutpostsoutspreadoutspreadingoutstretchoutstretchesoutstretchingoutthrustoverstaypanhandlespiggybacksplugpluginpluginspostponementsprolongationsprolongingpropagationprotracting
Show 23 more words
protractionprotrusionspuginquiz modulesreachingreappointmentreferencerenewalrenewalsretrofitsequence extensionservice contract renewalsoftware modulesprawlsprawlsstretchednesssuffixestelephone extensiontelescopingtentacleuniversity extensionvampingwing
Adjective(3 words)
optional add-ontensile deformationvector measure theory
Choosing the right synonym
- Closest matches in this entry: denotation, elongation, prolongation, access, accession.
- Sentence evidence is available for extension, so synonym choice can be checked against real usage rather than a flat word list.
- Ranking signals come from wiktionary, wordnet, opengloss, moby, and related lexical sources.
Synonym selection checklist
- Match the part of speech before comparing meanings.
- Check whether the synonym changes intensity, formality, or emotional tone.
- Read the replacement inside the full sentence, not just beside "extension".
- Prefer the clearest word over the most unusual word when writing for speed or comprehension.
When not to replace "extension"
Keep "extension" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Replacement workflow
1. Preserve meaning
Choose a synonym only if it keeps the core idea of "extension" intact in the sentence you are editing.
2. Tune tone
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
3. Re-read context
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
Final fit check
After choosing a replacement for "extension", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "extension" or choose a simpler alternative from the closest-match group.
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
More general
34 entriesadd-onadditionairingalgebraic conceptchangedancedelaydidacticsdisseminationeducationeducational activityenlargementexpansionholdimproverinstruction
Showing 16 of 34 words.
More specific
11 entriesIDE extensionalgebraic extensionbrowser extensioncontract extensiondeadline extensionfinite extensionmobile app extensiontext editor extensiontime extensiontranscendental extensionwarranty extension
Collocations
6 entriesbrowser extensiondeadline extensionextension cordfield extensionline extensiontime extension
Inflections
1 entriesDerivations
1 entriesAntonyms
1 entriesSample sentences
22 total sentences available.
Grace goes to phone extension upstairs.
Source: tatoeba (62776)
May we therefore ask you for a two months' extension of credit?
Source: tatoeba (64456)
This is the operator. Which extension would you like?
Source: tatoeba (240275)
Showing 4 of 22 available sentences.
Common questions
What are the closest synonyms for "extension"?
Closest matches include denotation, elongation, prolongation, access, accession.
How should I check whether a synonym fits "extension"?
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.