Aye can mean always: 'Round the world for ever and aye'
E'er can be short for ever, but not often in the sense of always.
ere
e'er
e'er
A three-letter word that means "exist" is almost always "are." See if it will work.
enow
grot
enow
One seven letter word, One two letter word and a five letter word, One three letter word and a four letter word, One three letter word and two two letter words, Two three letter words, Three two letter words, A two letter word and a four letter word, A six letter word, A two letter word and a three letter word, A five letter word, Two two letter words, A four letter word, A three letter word, or A two letter word.
I've is a three letter word. I'll is another three letter word.
enorm t.d. martin
Imp is a three-letter word for rapscallion.
A three letter word for debt is owe.