From Latin 'admittere' (to let in) — the confession sense grew from allowing an unwelcome truth to enter.
To allow entry or access; to confess or acknowledge as true; to accept as valid or possible.
From Latin 'admittere' (to send to, to let in, to allow to enter, to permit), composed of the prefix 'ad-' (to, toward) + 'mittere' (to send, to let go, to release). The verb 'mittere' is one of the most productive Latin verbs, generating dozens of English words through its prefixed forms: 'commit' (send together), 'emit' (send out), 'omit' (let go), 'permit' (send through), 'remit' (send back), 'submit' (send under), 'transmit' (send across), 'dismiss' (send away), 'promise' (send forth), and 'compromise' (a mutual sending forth of pledges). The sense evolution of 'admit' follows