n. /poot"on', -awn'/ ; adj. /poot"on", -awn"/ , n. Informal.
1. an act or instance of putting someone on.
2. a prank or pretense, esp. one perpetrated or assumed in mock seriousness; hoax; spoof.
3. affected manner or behavior; pretentiousness.
adj.
4. assumed, feigned, pretended, or disguised: a put-on manner that didn't fool anyone.
[ 1855-60; adj., n. use of v. phrase put ( someone ) on ]