off-the-wall

[awf-thuh-wawl, of-]

adjective

Informal.

1. markedly unconventional; bizarre; oddball.

   an unpredictable, off-the-wall personality.

off-the-wall

adjective

1. slang,  (off the wall when postpositive) new or unexpected in an unconventional or eccentric way

   an off-the-wall approach to humour

Word History and Origins

Origin of off the wall¹

First recorded in 1970–75

Word History and Origins

Origin of off the wall¹

C20: possibly from the use of the phrase in handball and squash to describe a shot that is unexpected

Idioms and Phrases

Eccentric, unconventional, as in That idea of opening a 100-seat theater is off the wall. This expression probably originated in baseball or some other sport in which the ball can bounce off a wall in an erratic way. [Colloquial; 1960s]