4 words for AFMU 1-letter words

Filter answers for the "afmu" by length:
Sort
Alphabet (A–Z)
Alphabet (Z–A)
Scrabble score

1 letter (4)

a f m u
Poet’s word, with inverted comma, for the end of the day
?
E
?
E
?
N
Hint 1 meaning
The old plural of Eye.
Hint 2 anagram
EEN
Hint 3 another clue
AND STILL ___
6 +1