ANY - To even the slightest extent, at all.
CAN - To know how to; to be able to.
CON - To study, especially in order to gain knowledge of.
NAN - Affectionate name for a grandmother.
COY - Bashful, shy, retiring.
NAY - No.
YON - Distant, but within sight.
CAY - A small, low island largely made of sand or coral.
CYAN - A colour between blue and green in the visible spectrum; the complementary colour of red; the colour obtained by subtracting red from white light.
CANON - A generally accepted principle.
ANNOY - To disturb or irritate, especially by continued or repeated acts; to bother with unpleasant deeds.
CANNY - Careful, prudent, cautious.
CANYON - A valley, especially a long, narrow, steep valley, cut in rock by a river.