verb; zero derivation
To leave alone, to forget about. The drastic semantic change of allow from ‘to let’ to ‘to leave alone’ seems to make sense when read aloud, perhaps because let and leave are synonyms in the sense of “let it be/leave it be”, therefore allow could have changed in meaning, like let, to mean ‘leave’. So “allow it be” could have become synonymous with “let it be”. Eventually, the “it be” was dropped, leaving “allow” to mean “leave it be”.
I’m allowing the homework.
Etymology : allow. From zero-derivation of allow, 'to let'.
Source : Conversation with friend.
Last modified: 10 June 2008