The kanji character 累（るい） primarily conveys the meaning of "accumulation," "to pile up," "to involve," or "to burden." It suggests the idea of things building up over time or through repeated actions, leading to a state of being encumbered or affected. It can also refer to something that is consecutive or successive.

・On-yomi (音読み): ルイ (rui) ・Kun-yomi (訓読み): かさ（なる） (kasa(naru)) - to be piled up, to accumulate; かさ（ねる） (kasane(ru)) - to pile up, to accumulate

⚫︎ 累計（るいけい） Translation: total; cumulative total ⚫︎ 疲労累計（ひろうるいけい） Translation: accumulated fatigue ⚫︎ 連累（れんるい） Translation: implication; being implicated

The kanji 累（るい） is a 形声文字 (keisei moji), a phono-semantic compound. It combines the radical 田 (た, ta), meaning "field" or "plot of land," with the phonetic component 疐 (tei), which contributes to the sound and hints at the meaning. The 田 suggests a field where things are gathered and accumulated. The meaning evolved to represent the accumulation or gathering of things, burdens, or consequences.