x

(noun) the cardinal number that is the sum of nine and one; the base of the decimal system. Synonyms: ten, 10, X, tenner, decade.

(noun) the 24th letter of the Roman alphabet. Synonyms: X, ex.

(noun) street names for methylenedioxymethamphetamine. Synonyms: Adam, ecstasy, XTC, go, disco biscuit, cristal, X, hug drug.

(adj) being one more than nine. Synonyms: ten, 10.