undependable

play
adjective un·de·pend·able \ˌən-di-ˈpen-də-bəl\

Definition of undependable

  1. :  unable to be trusted or relied on :  not dependable :  unreliable an undependable source of information an undependable water supply

undependability

play \ˌən-di-ˌpen-də-ˈbi-lə-tē\ noun

undependably

play \ˌən-di-ˈpen-də-blē\ adverb

First Known Use of undependable

1860

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