This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A person who guesses; especially someone who can make a reasonable prediction from little evidence.

n. One who guesses; one who forms or gives an opinion without means of knowing.

n. One who guesses or conjectures; one who decides or gives an opinion without certain means of knowing.

n. a person who guesses

"York, where a second-guesser is merely an apprentice working his way up to the truly good stuff."

person    mortal    individual    someone    soul    somebody   

conjecturer    surmiser    œdipus    mistruster    diviner   

Prof.    aggressor    assessor    compressor    dresser    lesser    lessor    messer    oppressor    possessor   

ex-musician    pitchmen    businesswoman    andnew    angulation    knockin'    yourself    disputing    westerling    windstorm