vacuous

  1. devoid of significance or force

    Synonyms : empty, hollow
    Examples :
    • vacuous comments
  2. devoid of intelligence or thought

    Synonyms : mindless
    Examples :
    • a vacuous mind
  3. devoid of matter

    Examples :
    • a vacuous space

vacillate

  1. be undecided about something; waver between conflicting positions or courses of action

    Synonyms : hover, oscillate, vibrate
    Type Of : hesitate, waffle, waver
  2. move or sway in a rising and falling or wavelike pattern

    Synonyms : fluctuate, waver
    Type Of : swing
    Examples :
    • the line on the monitor vacillated

vent

  1. activity that frees or expresses creative energy or emotion

    Synonyms : outlet, release
    Type Of : activity
    Examples :
    • he gave vent to his anger
  2. expose to cool or cold air so as to cool or freshen

    Synonyms : air, air out, ventilate
    Type Of : refresh, freshen
  3. give expression or utterance to

    Synonyms : give vent, ventilate
    Type Of : express, evince, show
    Examples :
    • She vented her anger
    • The graduates gave vent to cheers
  4. a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt

    Synonyms : volcano
    Type Of : crack, crevice, fissure, scissure, cleft
  5. a hole for the escape of gas or air

    Synonyms : blowhole, vent-hole, venthole
    Type Of : hole
  6. a slit in a garment (as in the back seam of a jacket)

    Type Of : slit
  7. external opening of urinary or genital system of a lower vertebrate

    Type Of : orifice, porta, opening