19. better go (someone) one better, to exceed another's efforts; surpass.
20. better had better or best, ought to.
Etymology: (bef. 900; ME bettre, OE bet(t)(e)ra)
Definition of 'BETTER'
Princeton's WordNet
1. (noun)better something superior in quality or condition or effect "a change for the better"
2. (noun)bettor, better, wagerer, punter someone who bets
3. (noun)better a superior person having claim to precedence "the common man has been kept in his place by his betters"
4. (adj)better the superior one of two alternatives "chose the better of the two"
5. (adj)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"
6. (adj)better (comparative of `good') changed for the better in health or fitness "her health is better now"; "I feel better"
7. (adj)better(p), best(p) (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"
8. (verb)better more than half "argued for the better part of an hour"
9. (verb)better, break surpass in excellence "She bettered her own record"; "break a record"
10. (verb)better, improve, amend, ameliorate, meliorate to make better "The editor improved the manuscript with his changes"
11. (adverb)better, improve, ameliorate, meliorate get better "The weather improved toward evening"
12. (adverb)better comparative 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"
1. (adjective)better of higher quality, or more useful, exciting, etc. than others a better driver than my brother; This wine tastes much better.; The weather is getting better.; The firewall is better than nothing, but not safe enough.
2. better better than nothing more healthy than before Hope you get better soon.; My throat's feeling better.
3. better it's better/it would be better indicates what you think should happen It's always better to ask a doctor.
4. (adverb)better in a way that is of a higher standard, quality, etc. She sings better than I do.; I did better on the test than anyone.
5. better better late than never indicates you think it is better for sth to happen late than not to happen I haven't called in a while, but better late than never.; Bring all your friends - the more people the better!
6. better had better indicates what sb should do You'd better go home now.
7. (noun)better get the better of to gain an advantageover sb finally got the better of his opponent
8. better indicates that a feeling is too strong to ignore Curiosity got the better of me.
Definition of 'BETTER'
Webster Dictionary
1. (adj)BETTER having good qualities in a greater degree than another; as, a better man; a better physician; a better house; a better air
2. (adj)BETTER preferable in regard to rank, value, use, fitness, acceptableness, safety, or in any other respect
13. BETTER in a superior or more excellent manner; with moreskill and wisdom, courage, virtue, advantage, or success; as, Henry writes better than John; veterans fightbetter than recruits