To stupefy or bewilder; to amaze or confound (dialectal archaic).
Possibly from Old English or Germanic roots related to 'amaze,' with '-ist' as a verb ending, though the exact etymology is uncertain. May be related to 'maze' or losing one's direction mentally.
Amaist is so rare that most modern dictionaries don't include it, which is kind of beautiful—it's a ghost word that probably vanished because English had better alternatives like 'amaze,' and we can watch dead words disappear in real time.
Complete word intelligence in one call. Free tier — 50 lookups/day.