enigma

Meanings

something that baffles understanding and cannot be explained
a difficult problem

Synonyms

brain-teaser, closed book, conundrum, mystery, riddle, secret

Scrabble Score: 9

enigma is a valid Scrabble (US) TWL word
enigma is a valid Scrabble Word in Merriam-Webster MW Dictionary
enigma is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 12

enigma is a valid Words With Friends word