spreadeagle vs spread-eagle

spreadeagle is not an adjective while spread-eagle is an adjective.

Word	Noun	Adjective	Verb	Adverb
spreadeagle	No	No	Yes	No
spread-eagle	No	Yes	Yes	No

As verbs, spreadeagle and spread-eagle are synonyms defined as:

Other synonyms of spreadeagle include rout.

spreadeagle (adjective)	spread-eagle (adjective)
	with arms and legs stretched out and apart

spreadeagle (verb)	spread-eagle (verb)
defeat disastrously	stretch out completely
	defeat disastrously
	stand with arms and legs spread out
	execute a spread eagle on skates, with arms and legs stretched out
	stretch over