undependable

Definitions of undependable
  1. adjective
    not worthy of reliance or trust
    “an undependable assistant”
    synonyms: unreliable
    erratic, temperamental, wayward
    likely to perform unpredictably
    uncertain
    not consistent or dependable
    unsound
    of e.g. advice
    untrustworthy, untrusty
    not worthy of trust or belief
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    Antonyms:
    dependable, reliable
    worthy of reliance or trust
    certain, sure
    reliable in operation or effect
    tested, time-tested, tried, tried and true
    tested and proved to be reliable
    undeviating
    used of values and principles; not subject to change; steady
    trustworthy, trusty
    worthy of trust or belief
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  2. adjective
    liable to be erroneous or misleading
    “an undependable generalization”
    synonyms: unreliable
    fallible
    likely to fail or make errors
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