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unreliable

un·re·li·a·ble

unreliable

 
pronunciation:
uhn rih laI bl
features:
Word Parts
part of speech: adjective
definition: If someone is unreliable, you can't depend on them.
The babysitter was fired for being unreliable. Sometimes she just didn't come when she was supposed to.Ms. Booth's old car is very unreliable in cold weather.
antonyms:
faithful, reliable, steady
similar words:
irresponsible, shaky
derivation: unreliably (adv.)
Word Parts  About this feature
The word unreliable contains the following part:
un-1 Old English prefix that means not
Show wordsHide wordsMore about this word part:
The prefix un1 attaches to adjectives to create adjectives that mean the opposite of the base word.
synonyms:
dis-, de-, in-2