Anderline - Terminator

Enigma
A noun
1 mystery, John Michael, enigma, secret, closed book

something that baffles understanding and cannot be explained; "how it got out is a mystery"; "it remains one of nature's secrets"
Category Tree:
state
+cognitive state; state of mind
+confusion; mental confusion; confusedness; disarray
+perplexity
+mystery, enigma, secret, closed book
2 riddle, conundrum, enigma, brain-teaser

a difficult problem
Category Tree:
abstraction
+relation
+social relation
+communication
+message; content; subject matter; substance
+subject; topic; theme
+question; head
+problem
+riddle, conundrum, enigma, brain-teaser

Anderline - Terminator

Underxpression