extravagate

Learned borrowing from Medieval Latin extrāvagāt- + English -ate (suffix forming verbs). Extrāvagāt- is the participial stem of extrāvagārī, from Latin extrā (“beyond, outside of”, preposition) (ultimately from Proto-Indo-European *h₁éǵʰs (“out”)) + vagārī (the present active infinitive of vagor (“to ramble, roam, stroll about, wander”), from vagus (“rambling, roaming, strolling, wandering”) (further etymology uncertain) + -or (the first-person singular present passive indicative of -ō (suffix forming regular first-conjugation verbs))).