off guard vs off your guard

off guard and off your guard both are adjectives.

Word	Noun	Adjective	Verb	Adverb
off guard	No	Yes	No	No
off your guard	No	Yes	No	No

As adjectives, off guard and off your guard are synonyms defined as:

Other synonyms of off guard include napping, off-guard, off her guard, off his guard, off one's guard.

off guard (adjective)	off your guard (adjective)
not prepared or vigilant	not prepared or vigilant