unreliable




Someone unreliable can’t be trusted to do something. Things can be unreliable too, like a bike with a wobbly wheel.

The word “rely” is a clue to what unreliable means. When you can rely on something, you can count in it — it’s reliable. On the other hand, you’d better not count on an unreliable person. People can be unreliable because they’re dishonest, always late, bad at their job, or just inconsistent. Things can be unreliable because they’re broken or old. A train schedule can be unreliable if the trains are never on time. Unfortunately, there’s a lot of stuff in life that’s unreliable, so be careful.

Definitions of unreliable
  1. adjective

    not worthy of reliance or trust

    “in the early 1950s computers were large and expensive and
    unreliable
    synonyms:
    undependable

    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
    show more antonyms…

  2. adjective

    liable to be erroneous or misleading

    synonyms:
    undependable

    fallible

    likely to fail or make errors
  3. adjective

    dangerously unstable and unpredictable

    “an
    unreliable trestle”
    synonyms:
    treacherous

    dangerous, unsafe

    involving or causing danger or risk; liable to hurt or harm
  4. adjective

    lacking a sense of responsibility

    Synonyms:

    irresponsible

    showing lack of care for consequences

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