Crossword puzzle clue "letter's needs"

Singer who needs to get out in the sun more? (adjacent-letter swap)

Letter's needs

Letter that rhymes with its preceding and following letter

Words between a letter and a word starting with that letter

Letter for letter

A letter + smell + a letter + unbiased + a pronoun = ?

Word form made with the big letter depicted in this puzzle's diagram (this letter is entirely absent from the solution)

Greek letter whose first letter is silent