libido

n (pl ~s) [U, C] (psychology 心) emotional energy or urge, esp sexual 感情冲动; 情欲; （尤指）性欲.

liar, lib, libation, libber, libel, libellous (US libelous), liberal, liberalism, liberality, liberalize, liberalise, liberallization, liberallisation, liberally, liberate, liberated, liberation, liberator, libertarian, libertine, liberty, libidinous, Libra, Libran, librarian, library, librettist, libretto, lice, licence, licence (US license), licence plate (US license plate), license, license (also licence), licensee, licensing laws, licentiate, licentious, licentiously, licentiousness, lich-gate (also lych-gate), lichen,