underfucked in English dictionary underfucked Meanings and definitions of "underfucked" (slang, vulgar) Not receiving enough sex. adjective (slang, vulgar) Not receiving enough sex. more Grammar and declension of underfucked underfucked ( comparative more underfucked, superlative most underfucked) underfucked (comparative more underfucked, superlative most underfucked) more Sample sentences with "underfucked" Declension Stem Try again Authors