exculpate (v.)
"to clear from suspicion of wrong or guilt," 1650s, from Medieval Latin exculpatus, past participle of exculpare, from Latin ex culpa, from ex "out of" (see ex-) + culpa ablative of culpa "blame, fault." Related: Exculpated; exculpating.
https://www.etymonline.com/word/exculpate