to watch over;  to watch attentively
 to keep a promise;  to keep one's word
 to keep a promise;  to keep one's word
 to defend oneself;  to protect oneself
 to abide (by the rules);  to keep to the regulations
 to adhere to one's principles;  to preserve one's chastity
 to keep one's chastity;  to remain faithful to one's spouse;  to remain faithful to one's lover
 to protect;  to preserve;  to keep
 to hold fast to one's ways;  to be overly conservative;  to not get with the times; (lit.) to guard the tree stub
 to hold fast to one's ways;  to be overly conservative;  to not get with the times; (lit.) to guard the tree stub