24 unless synonyms include Ante, Before, But, Earlier than, Except for, Except, Excepting that, If not, In advance of, and Lest. Unless is a conjunction, and its antonyms are if and whenever. Here are some additional synonyms for "unless" with example sentences.
24 other ways to say unless.
I won't go unless you invite me.
She won't leave unless he apologizes sincerely.
The abrasion on the surface of the glass was barely visible unless you looked closely.
unless it rains, we'll have a picnic.
We can't proceed unless you approve it.