IPA: /ˈlæsɪˌtjuːd/
KK: /ˈlæsɪˌtud/
A state of feeling tired and lacking energy or enthusiasm.
After a long day at work, I often feel a sense of lassitude that makes it hard to focus on anything else.
Lassitude → It is formed from "languere" (meaning to be weary or faint) and the suffix "-tude" (indicating a state or condition). The word "lassitude" refers to a state of physical or mental weariness or fatigue.
Think of feeling 'weary' ('languere') and being in a 'state' ('-tude') of tiredness — that's what lassitude means.