conundrum

As nouns the difference between conundrum and guesswork

is that conundrum is a difficult question or riddle, especially one using a play on words in the answer while guesswork is an estimate, judgment or opinion made by guessing, from limited information.

As nouns the difference between conundrum and quantum

is that conundrum is a difficult question or riddle, especially one using a play on words in the answer while quantum is .

As a noun conundrum

is a difficult question or riddle, especially one using a play on words in the answer.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between conundrum and pun

is that conundrum is a difficult question or riddle, especially one using a play on words in the answer while pun is a joke or type of wordplay in which similar senses or sounds of two words or phrases, or different senses of the same word, are deliberately confused.

As a verb pun is

to beat; strike with force; ram; pound, as in a mortar; reduce to powder or pun can be to make or tell a pun; make a play on words.

As nouns the difference between brainteaser and conundrum

is that brainteaser is a difficult problem or puzzle while conundrum is a difficult question or riddle, especially one using a play on words in the answer.

As an adjective intractable

is not tractable or to be drawn or guided by persuasion; not easily governed, managed, or directed; uncontrollable; incurable; violent; stubborn; obstinate.

As a noun conundrum is

a difficult question or riddle, especially one using a play on words in the answer.

As a verb bemuse

is to confuse or bewilder.

As a noun conundrum is

a difficult question or riddle, especially one using a play on words in the answer.