ANT - Any of various insects in the family Formicidae in the order Hymenoptera, typically living in large colonies composed almost entirely of flightless females.
ATE - Simple past of eat.
EAT - To consume (something solid or semi-solid, usually food) by putting it into the mouth and swallowing it.
FAN - A hand-held device consisting of concertinaed material, or slats of material, gathered together at one end, that may be opened out into the shape of a sector of a circle and waved back and forth in order to move air towards oneself and cool oneself.
FAT - A large tub or vessel for water, wine, or other liquids; a cistern.
TAN - A symbol of the trigonometric function tangent.
TEA - The dried leaves or buds of the tea plant, Camellia sinensis.
AFT - The stern portion of a vessel.
FEN - A type of wetland fed by ground water and runoff, containing peat below the waterline.
FATE - The cause, force, principle, or divine will that predetermines events.
NEAT - A bull or cow.
TENT - A pavilion or portable lodge consisting of skins, canvas, or some strong cloth, stretched and sustained by poles, used for sheltering persons from the weather.
FEAT - A relatively rare or difficult accomplishment.
FETA - A variety of curd cheese made from sheep's or goat's milk and originating from Greece.
ANTE - A price or cost, as in up the ante.
FATTEN - To become fatter.