outguess vs prognosticate

outguess and prognosticate both are verbs.

Word	Noun	Adjective	Verb	Adverb
outguess	No	No	Yes	No
prognosticate	No	No	Yes	No

As verbs, prognosticate is a hypernym of outguess; that is, prognosticate is a word with a broader meaning than outguess:

Other hypernyms of outguess include anticipate, call, forebode, foretell, predict, promise.

outguess (verb)	prognosticate (verb)
attempt to anticipate or predict	make a prediction about; tell in advance
	indicate, as with a sign or an omen