unreliable

[ uhn-ri-lahy-uh-buhl ]
/ ˌʌn rɪˈlaɪ ə bəl /

adjective

not reliable; not to be relied or depended on.

Origin of unreliable

First recorded in 1830–40; un-1 + reliable

Related forms

un·re·li·a·bil·i·ty, un·re·li·a·ble·ness, nounun·re·li·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unreliability

British Dictionary definitions for unreliability

unreliable

/ (ˌʌnrɪˈlaɪəbəl) /

adjective

not reliable; untrustworthyan unreliable witness
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012