Answer: lowercaseletter

AnswerCrossword Clue
LOWERCASELETTER

Small E or G, e.g.

LOWERCASELETTER

Capital's opposite

LOWERCASELETTER

a or b

LOWERCASELETTER
WHAT THIS CLUE HAS ONE Of
LOWERCASELETTER
It's not a capital
LOWERCASELETTERx, y or z