15-Letter Words Containing: P,E,T,H,E,R

• having an allergy or peculiar or excessive susceptibility (especially to a specific factor)

• The fused head and thorax of spiders and crustaceans

• extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds

• the branch of psychiatry concerned with psychological methods

• the treatment of mental or emotional problems by psychological means