LIBIDO
libido
(noun) (psychoanalysis) a Freudian term for sexual urge or desire
Source: WordNet® 3.1
Etymology
Noun
libido (countable and uncountable, plural libidos)
(common usage) Sexual urges or drives.
Synonym: horniness (vulgar)
Antonym: boredom
(psychology) Drives or mental energies related to or based on sexual instincts but not necessarily sexual in and of themselves.
Antonyms: destrudo, mortido
Hypernym: drive
(astronomy, archaic or misused, an occasional carry-over from astrology to astronomy) synonym of albedo in terms of a planet's, such as that of Mars, average surface spectral reflectivity.
Source: Wiktionary