Is well defined hyphenated?
Spell ‘well-defined’ with a hyphen when it is an adjective.
… Fixes cplusplus#1587..
Is it correct to say well said?
Interjection. well said! A comment expressing approval; an accolade; “that was spoken well” (clearly or eloquently.)
Does well established have a hyphen?
Re: well established or well-established They are correct. You need the hyphen only when you use a phrase as an adjective.
Is well educated hyphenated?
1. well-educated and well-dressed are hyphenated adjectives from the adverb well, referring to a participle adjective like educated or dressed. It should be taken as a unit. Therefore if you say “better educated” you break the unit.