adj., adv., n., & v.
adj. (compar. of GOOD). 1 of a more excellent or outstanding or desirable kind (a better product; it would be better to go home). 2 partly or fully recovered from illness (feeling better).
adv. (compar. of WELL(1)). 1 in a better manner (she sings better). 2 to a greater degree (like it better). 3 more usefully or advantageously (is better forgotten).
n. 1 that which is better (the better of the two). 2 (usu. in pl.; prec. by my etc.) one's superior in ability or rank (take notice of your betters).
v. 1 tr. improve on; surpass (I can better his offer). 2 tr. make better; improve. 3 refl. improve one's position etc. 4 intr. become better; improve. better feelings one's conscience. better half colloq. one's wife or husband. better off in a better (esp. financial) position. the better part of most of. for better or for worse on terms accepting all results; whatever the outcome. get the better of defeat, outwit; win an advantage over. go one better 1 outbid etc. by one. 2 outdo another person. had better would find it wiser to.
[ OE betera f. Gmc ]