The crossword clue Letter after upsilon with 3 letters was last seen on the October 27, 2021. We think the likely answer to this clue is PHI.

What follows Upsilons in Greek alphabet?

Synonyms, crossword answers and other related words for LETTER AFTER UPSILON [phi]

What is towards the stern?

Aft (adjective): toward the stern (rear) of a ship.