i Register
In some senses, feat is marked as archaic, obsolete, informal. Watch for register when choosing this word.
noun
A relatively rare or difficult accomplishment.
I consider scaling Mount Blanc the greatest physical feat of my life.
Raising six children who all went on to be doctors was a tough feat for us.
adj
Dexterous in movements or service; skilful; neat; pretty.
[…] she set downe her period on the face of Alexis, thinking he was the fairest, and the featest swaine of all the rest.
Oh you high sp’rited Paragons of witte, That flye to fame beyond our earthly pitch, Whose sence is sound, whose words are feat and fitte, Able to make the coyest eare to itch: Shroud with your mighty wings that mount so well, These little loues, new crept from out the shell.
verb
To form; to fashion.
[…] most praised, most loved, A sample to the youngest, to the more mature A glass that feated them, and to the graver A child that guided dotards;