lethargy

• n. 嗜眠；無気力；傾眠

ギリシャ語のlethargia、忘れる、忘却、lethe、忘却、語源的には潜在的な、Letheと同じ、argos、無霊、a-、無、なし、-erg、働く、傾向、語源的には仕事、相乗効果と同じから。すなわち、さまよう精神として、無気力、無関心。

lethargy

lethargy: [14] Greek léthē meant ‘oblivion’ (the Romans used it for the name of a river in Hades whose water induced forgetfulness, and its influence has also been traced in changing Latin lētum ‘death’ to lēthum, source of English lethal [17]). From it was formed the adjective léthargos, which in turn produced the noun lēthargíā, source (via Latin and Old French) of English lethargy.
=> lethal

lethargy (n.)

late 14c., litarge, from Old French litargie or directly from Medieval Latin litargia, from Late Latin lethargia, from Greek lethargia "forgetfulness," from lethargos "forgetful," originally "inactive through forgetfulness," from lethe "forgetfulness" (see latent) + argos "idle" (see argon). The form with -th- is from 1590s in English.

1. Symptoms include tiredness，paleness，and lethargy .

症状としては、疲れ、顔色が青白く、元気がないことが挙げられる。

2.After the meal,I could feel lethargy overtaking me.

食後私は昏睡状態になった。

3.Sleep deprivation can cause stress，loss of appite and lethargy .

睡眠不足は緊張、食欲のなさ、怠惰さを招く。

4.She was suddenly overcome by lethargy .

彼女は突然がっかりした。

5.Get your body moving to boost energy，stay supple and shake off winter lethargy .

体を鍛えて活力を高め、柔軟性を保ち、冬のけだるさを振り払う。