adj. 25B6; adjective he has his own reasons : PERSONAL, individual, particular, private, personalized, unique.
25B6; verb
I own this house : BE THE OWNER OF, possess, be the possessor of, have in one's possession, have (to one's name).
she had to own that she agreed : ADMIT, concede, grant, accept, acknowledge, agree, confess.
25A0; get one's own back (informal) HAVE/GET/TAKE ONE'S REVENGE (ON), be revenged (on), hit back, get (back at), get even (with), settle accounts (with), repay, pay someone back, give someone their just deserts, retaliate (against/on), take reprisals (against), exact retribution (on), give someone a taste of their own medicine.
25A0; hold one's own STAND FIRM, stand one's ground, keep one's end up, keep one's head above water, compete, survive, cope, get on/along.
25A0; on one's own
I am all on my own : (ALL) ALONE, (all) by oneself, solitary, unaccompanied, companionless; informal by one's lonesome; Brit. informal on one's tod, on one's Jack Jones.
she works well on her own : UNAIDED, unassisted, without help, without assistance, (all) by oneself, independently.
25A0; own up CONFESS (TO), admit to, admit guilt, plead guilty, accept blame/responsibility, tell the truth (about), make a clean breast of it, tell all; informal come clean (about).