the.com/conundrum

a puzzle so smug it dresses up as a question and refuses to leave.

means A puzzle or problem that's tricky to solve, often a riddle whose answer hinges on a pun or wordplay.

from A wonderfully mysterious word: it surfaces in late-16th-century English as university slang, originally a term of mockery for a pedant or a quibble. Its form looks like mock-Latin — the kind of nonsense scholars invented to sound learned — but its true root is genuinely unknown, which makes the word a small conundrum of its own. Over time its sense drifted from 'a whimsical fancy' to 'a riddle with a punning answer' and finally to 'any hard puzzle.'

murky origins
Oxford English Dictionary literally flags its etymology unknown
first meaning
originally an Oxford slang insult for a pedant
riddle cousin
once specifically meant a pun-based joke riddle
spelling chaos
appeared as quonundrum and conimbrum across centuries
for instance

the fermi paradox — physicist enrico fermi's 1950 question: if aliens exist, why haven't we detected them?

the monty hall problem — probability puzzle from the 1970s game show 'let's make a deal' that confuses most people

the grandfather paradox — time travel logical impossibility: could you kill your grandfather before your parent was born?

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