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    ULTRASONIC Antonyms

    There are 6 antonyms of the word ultrasonic. (opposite meanings)
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    Definition of ULTRASONIC
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    ultrasonically

    Best Opposite Words For ULTRASONIC

    RankWordSave?Synonyms..UsageType
    1infrasonic
    		adjectiveadj
    2acoustic
    		noun, adjectiven, adj
    3audible
    		adjectiveadj
    4sonic
    		verb, noun, adjectivev, n, adj
    5subsonic
    		adjectiveadj
    6unknown
    		noun, adjectiven, adj

    Alternatives for ACOUSTIC

    Words (1)
    acoustical
    Opposite words for acoustic

    Alternatives for AUDIBLE

    Words (11)
    hearablecleardetectabledistinctloudnoticeableperceptibleresoundingsonorousvocalsounded
    Opposite words for audible

    Alternatives for SONIC

    Words (1)
    transonic
    Opposite words for sonic

    Alternatives for UNKNOWN

    Words (25)
    obscureunidentifiedanonymousunchartedundiscoveredunexploredunfamiliarunrecognizedunascertainednamelessstrangecrypticenigmatichiddenindefinitemysteriousundeterminedundistinguishableunfathomableunsolvedunnamedunsungunrevealedalienstranger
    Phrases (3)
    terra incognitaunknown quantityunknown region
    Opposite words for unknown
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