choose (to decide which person or thing you want out of the ones that are available): Which dress should I choose?
pick informal (to choose someone or something from a group): Pick a number from one to ten.
select formal (to choose someone or something, especially after thinking carefully): You should select the best one.
decide on (to choose after careful thought): We have decided on a date for the wedding.
opt (to choose or do one thing instead of another): We opted to postpone the matter for a few more days.
go for informal (to choose or prefer): I think I’ll go for the blue dress.
settle on (to decide on something after a period of time): We have decided on a date for the wedding.
