diagonalizes

diagonalizing

diagonally

diagonals

dodecagon

dodecagons

dragon

dragonet

dragonets

dragonflies

dragonfly

dragonhead

dragonheads

dragonish

dragons

enneagon

enneagons

estragon

estragons

flagon

flagons

flexagon

flexagons

glucagon

glucagons

heptagon

heptagonal

heptagons

hexagon

hexagonal

hexagonally

hexagons

martagon

martagons

nonagon

nonagons

nonantagonistic

octagon

octagonal

octagonally

octagons

paragon

paragoned

paragoning

paragons

pentagon

pentagonal

pentagonally

pentagons

protagonist