SIDELINE Antonyms There are 9 antonyms of the word sideline. (opposite meanings)Did you mean?Definition of SIDELINEAlso try opposite words for..sidelinedsidelinesBest Opposite Words For SIDELINETop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1activeadjectiveadj2centraladjectiveadj3corenoun, adjectiven, adj4engageverbv5involveverbv6keyverb, nounv, n7mainlineverb, nounv, n8participateverbv9primarynoun, adjectiven, adj Alternatives for ACTIVE Words (27)agilebusyenergeticnimblealivedynamicanimatedbriskbustlingengagedfastindustriouslivelypromptquickspiritedvibrantvigorousactingdiligentoperativetopworkingdeedfulcombat-readyfightingparticipatingPhrases (3)in forceactive agentactive voiceOpposite words for active Alternatives for CENTRAL Words (18)mainprincipalfundamentalkeybasiccentralizedcorecrucialessentialfocalmiddlepivotalprimaryprimedominantcardinalexchangeprimalPhrases (1)telephone exchangeOpposite words for central Alternatives for CORE Words (20)essencecentercruxheartkernelnucleusgistburdencentreeffecthomerinwardnessmarrowmeatnitty-grittynubpithsubstancesumomerPhrases (4)congress of racial equalitycore groupheart and soulmagnetic coreOpposite words for core Alternatives for ENGAGE Words (22)hireemployenlistoccupyinvolvejoinparticipateabsorbaffiancebetrothcharterengrossleaselockmeshoperateplightprosecutepursuerenttakewageOpposite words for engage Alternatives for INVOLVE Words (25)demandimplicateincludenecessitaterequireabsorbcarrycomprisecontaincoverencompassengageentailincorporateimplyaffectaskcomplicateembarrassentangleneedoverwhelmpostulateregardtakePhrases (1)call forOpposite words for involve Alternatives for KEY Words (23)crucialessentialimportantnecessarysignificantvitalcardinalcaycentraldescribediscoverdistinguishfundamentalheadstoneidentifykeystonekilonamepaintprimalsamaratonalitywinderPhrases (4)florida keyfrancis scott keykey fruitkey outAbbreviations (1)kgOpposite words for key Alternatives for MAINLINE Words (12)centralchiefforemostkeyleadingmajorpredominantprimaryprimeprincipalmainmainstreamOpposite words for mainline Alternatives for PARTICIPATE Words (1)enterPhrases (1)take partOpposite words for participate