best
Pronunciation: /bɛst/
adjective
- of the most excellent or desirable type or quality: the best midfielder in the country how to obtain the best results from your machine her best black suit
- most enjoyable: some of the best times of my life
- most appropriate, advantageous, or well advised: do whatever you think best it’s best if we both go
adverb
- to the highest degree; most (used with verbs suggesting a desirable action or state or a successful outcome): they named the pictures they liked best you knew him best well-drained soil suits this plant best
- to the highest standard: the best-dressed man in Britain the things we do best
- most appropriately or usefully: pruning is best done in spring jokes are best avoided in essays
noun
(the best)- that which is the most excellent, outstanding, or desirable: buy the best you can afford Sarah always had to be the best at everything this film represents the best of mainstream popular cinema
- the finest aspect of a person or thing: he brought out the best in people
- (one's best) the highest standard or level that someone or something can reach: this is jazz at its best try to look your best
- (one's best) one’s smartest or most formal clothes: she dressed in her best
- (in sport) a record performance: a lifetime best of 12.0 seconds a personal best
- written at the end of a letter to wish a person well: See you soon, best, Michael
verb

Phrases
-
all the best
- said or written to wish a person well on ending a letter or parting.
-
as best one can (or may)
- as effectively as possible under the circumstances: I went about my job as best I could
-
at best
- taking the most optimistic view: what signs there are of recovery are patchy at best
-
at the best of times
- even in the most favourable circumstances: his memory is poor at the best of times
-
best of breed
- the animal in a show judged to be the best representative of its breed.
- any item or product considered to be the best of its kind: their technology is still considered best of breed and demand for their products is still growing
-
one's best friend
- one’s closest friend: Michael was Frank’s best friend he’s best friends with Eddie
-
the best-laid plans of mice and men gang aft agley
- proverb even the most careful planning doesn’t necessarily ensure success: in the tradition of all best-laid plans, subsequent events overturned the scheme[see gang2]
-
be the best of friends
- be very close friends: she’s really nice and we’re the best of friends
-
the best of three (or five etc.)
- victory achieved by winning the majority of a specified odd number of games.
-
the best part of
- most of: the tedious ceremony took the best part of a day
-
best wishes
- an expression of hope for someone’s future happiness or welfare, often written at the end of a letter: best wishes, Celia we sent our best wishes for a speedy recovery
-
one's best years
- the most vigorous and productive period of one’s life; one’s prime: my best years are ahead of me
-
do (or try) one's best
- do all one can: Ruth did her best to reassure her
-
be for (or all for) the best
- be desirable in the end, although not at first seeming so: what was done was done, and maybe it was for the best
-
get the best of
- overcome (someone): his drinking got the best of him and he was fired
-
give someone/thing best
- British dated admit the superiority of someone or something: he finally decided to give us best and took himself off
-
had best do something
- find it most sensible or well advised to do the thing mentioned: I’d best be going
-
make the best of
- derive what limited advantage one can from (something unsatisfactory): you’ll just have to make the best of the situation
- use (resources) as well as possible: he tried to make the best of his talents
-
make the best of a bad job
- British do something as well as one can under difficult circumstances.
-
six of the best
- British, chiefly historical or humorous a caning as a punishment, traditionally with six strokes of the cane: one prefect would hold you down and the other would give you six of the best
-
to the best of one's ability
- see ability.
-
to the best of one's knowledge
- see knowledge.
-
with the best of them
- as well or as much as anyone: he’ll be out there dancing with the best of them

Origin:
Old English betest (adjective), betost, betst (adverb), of Germanic origin; related to Dutch and German best, also to better1