Definition of if not
1 —used to talk about the negative result or effect of something You should study. If not, you won't pass the test.
2 —used to express surprise about meeting someone when it is not expected So I went to the game and who should I see there if not my old friend Tom!
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
“In Vino Veritas” and Other Latin Phrases to Live By
Top 10 Latin Phrases
Galaxy Brain: Words for Thought and Thinking
What's (another word for) the big idea?
Merriam-Webster's Words of the Week - Jan. 14
From the week ending 1/14/2022
8 Colors from the Bigger Crayon Box
Here's where those fancy shades get their names.
Ask the Editors