unbelieve

Etymology

From un- + believe.

unbelieve means To lose, abandon, or relinquish belief in; stop believing. Lexicurio rates it Sui generis — a strength score of 88 out of 100.

verb

To lose, abandon, or relinquish belief in; stop believing.“She began to unbelieve when she was eight years old.” Unbelieve. The word brought incredible sadness to them all. Every time a child started to unbelieve, a little of the magic of Christmas was lost.”