Adjective precarious has 4 senses
  1. precarious, unstable - affording no ease or reassurance; "a precarious truce"
    Antonyms: easy, at ease (indirect, via uneasy)
  2. parlous, perilous, precarious, touch-and-go - fraught with danger; "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery"
    Antonym: safe (indirect, via dangerous)
  3. precarious - dangerously insecure; "a precarious footing on the ladder"
    Antonym:
    secure (indirect, via insecure)
  4. precarious, shaky - not secure; beset with difficulties; "a shaky marriage"
    Antonym: secure (indirect, via insecure)
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