Crossword Clue:

BEWARE to be on ones guard

AnswerCrossword Clue
AMONG... friends (not having to be on one's guard)
BEWAREBe on one's guard.
ACAREHave ... (be on one's guard).
NAPBe off one's guard
NAPBe off one's guard.
ALERTOn one's guard
WARYOn one's guard
WARYOn one's guard.
LEERYOn one's guard
ALERTESTMost on one's guard