allow

1250–1300; Middle English alowen < Anglo-French al(l)o(u)er to place, allot, allow, Old French aloer to place < Late Latin allocāre; see al-, locus; the older sense “approve, sanction” and Middle English sense “praise” probably by taking the Anglo-French v. as representing Medieval Latin, Latin adlaudāre to praise; see ad-, laud

1. Allow, let, permit imply granting or conceding the right of someone to do something. Allow and permit are often interchangeable, but permit is the more positive. Allow implies complete absence of an attempt, or even an intent, to hinder. Permit suggests formal or implied assent or authorization. Let is the familiar, conversational term for both allow and permit.