libido

• n. 性欲、活力

ラテン語のlibido（欲望、憧れ）が語源で、語源的には愛と同じ。

libido (n.)

"psychic drive or energy, usually associated with sexual instinct," 1892, carried over untranslated in English edition of Krafft-Ebing's "Psychopathia Sexualis"; and used in 1909 in A.A. Brill's translation of Freud's "Selected Papers on Hysteria" (Freud's use of the term led to its popularity); from Latin libido "desire, lust," from libere "to be pleasing, to please," ultimately cognate with Old English lufu (see love (n.)).

1. A flagging libido and a drop in sexual performance are all part of the ageing process.

**が減退し、性機能が低下し、これらは老化過程の一部である。

2.Lack of sleep is a major factor in loss of libido .

睡眠不足は**喪失を引き起こす主要な要因の1つである。

3. Libido is an expression taken from the theory of the emotions.

力比は情緒理論から借用された語であることが多い。

4.Ginseng can increase energy and libido ，which can help solve intimacy problems.

人参は活力と**を増加させ、親密な関係の問題を解決するのに役立つ。

5.Even for government jobs，applicants are graded for libido ，or appearance.

政府部門の職務についても、申請者は計器によって等級付けられている。