What is the crossword answer for the clue: Proof word

ERAT - a 4 letter word may be the answer you are looking for!

ERGO - a 4 letter word may be the answer you are looking for!

STET - a 4 letter word may be the answer you are looking for!

DELE - a 4 letter word may be the answer you are looking for!

Proof word

4 Character Answers:

DELE

ERAT

ERGO

STET