Adjective: very bad, unpleasant, disgusting
The beached whale looked abominable.
(British spelling: Ardour)
Noun: great enthusiasm, burning passion
The musician has ardor for playing the violin.
Verb: to be useful, to help someone or something
King Arthur's sword availed in cutting off the black knight's limbs.
(British spelling: behove)
Verb: to be proper or suitable to do
It would behoove the astronaut to keep his helmet on.
Noun: the piece of metal, sometimes decorative, around a keyhole, cabinet handle, light switch, etc.
The front door had a very ornate escutcheon around the keyhole.
Noun: the act of rejoicing, act of showing joy
Charlie Brown and Snoopy danced in exultation.
Adverb: well-suited to a situation, agreeable
While shaking hands with Putin, Obama smiled felicitously.
Adjective: admirable, deserving of praise
The soldier's actions were laudable.
Verb: to limit, restrict, ration
The people had to stint the food they were given.
Noun: a commotion, outbreak, uproar
There was a tumult after the man's speech.