Open English Wordnet
Nouns
(n)bettersomething superior in quality or condition or effect“a change for the better” (n)bettera superior person having claim to precedence“the common man has been kept in his place by his betters” (n)betterthe superior one of two alternatives“chose the better of the two” Verbs
(v)better, breaksurpass in excellence“She bettered her own record”,
“break a record” Adjectives
(a)better(comparative of ‘good’) superior to another (of the same class or set or kind) in excellence or quality or desirability or suitability; more highly skilled than another“You're a better man than I am, Gunga Din”,
“a better coat”,
“a better type of car”,
“a suit with a better fit”,
“a better chance of success”,
“produced a better mousetrap”,
“she's better in math than in history” (a)better(comparative of ‘good’) changed for the better in health or fitness“her health is better now”,
“I feel better” (s)better, best(comparative and superlative of ‘well’) wiser or more advantageous and hence advisable“it would be better to speak to him”,
“the White House thought it best not to respond” (s)bettermore than half“argued for the better part of an hour” Adverbs
(r)bettercomparative of ‘well’; in a better or more excellent manner or more advantageously or attractively or to a greater degree etc.“She had never sung better”,
“a deed better left undone”,
“better suited to the job” (r)better, bestfrom a position of superiority or authority“father knows best”,
“I know better.”