SIDEWAYS Antonyms There are 8 antonyms of the word sideways. (opposite meanings)Did you mean?Definition of SIDEWAYSSynonyms of SIDEWAYSAlso try opposite words for..sidesidewayBest Opposite Words For SIDEWAYSTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1aheadadverbadv2forwardverb, adverbv, adv3onwardverb, adverbv, adv4straightnoun, adjectiven, adj5uprightadverb, adjectiveadv, adj6upwardadverb, adjectiveadv, adj7verticaladjectiveadj8in front Alternatives for AHEAD Words (8)forwardbeforebeforehandforraderforwardsleadingonwardonwardsPhrases (4)in the leadin advancein frontout frontOpposite words for ahead Alternatives for FORWARD Words (28)aheadforwardsonwardattackerforthonwardsstrikeradvancinganteriorboldbrazenforeforecastforradforraderforrardforward-movingfreshfrontfrontwardfrontwardsimpertinentintroductiononpreambleprefacehereonpredictedPhrases (2)pass onsend onOpposite words for forward Alternatives for ONWARD Words (6)forwardonwardsaheadforraderforthforwardsOpposite words for onward Alternatives for STRAIGHT Words (16)squaredirectlystraightedgeheteroconsecutivedirectflatfull-strengthheterosexualneatstraightawaystraightforwardtrueunbentunboweduncoiledPhrases (2)heterosexual personstraight personOpposite words for straight Alternatives for UPRIGHT Words (11)verticalperpendicularplumbrigidstandingstiffstraighttallgoodjustunslopedPhrases (1)upright pianoOpposite words for upright Alternatives for UPWARD Words (3)upupwardsupwardlyOpposite words for upward Alternatives for VERTICAL Words (7)uprightperpendicularelevatedplumbstandingstraightharmonicOpposite words for vertical