Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

sit in

intransitive verb

Definition of sit in

  1. 1 :  to take part in or be present at a session of music or discussion as a visitor —often used with on <invited to sit in on a rehearsal>

  2. 2 :  to participate in a sit-in



1868

First Known Use of sit in

1868


Seen and Heard

What made you want to look up sit in? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a timid, meek, or unassertive person

Get Word of the Day daily email!