The pronunciation of irrelevant
[ih-rel-uh-vuh nt] /ɪˈrɛl ə vənt/ (Show IPA) as
[ih-rev-uh-luh nt] /ɪˈrɛv ə lənt/ as if spelled
irrevelant, is the result of metathesis, the transposition of two sounds, in this case, the
[l] /l/ and the
[v] /v/ Relevant, the base word, is occasionally subject to the same process. Analogy with words like
prevalent and
equivalent may play a role. A similar reordering of the
[l] /l/ and
[v] /v/ consonant sounds, althought not a strict one-to-one metathesis, can be heard for Calvary
[kal-vuh-ree] /ˈkæl və ri/ when pronounced
[kav-uh l-ree] /ˈkæv əl ri/ . Here the transposition is reinforced by the existence of the familiar word
cavalry.