interest (a fraction of the amount of what was borrowed) · interest (attention that is given to something or someone) · interest (an involvement or stake in an undertaking)
aile: conflicto de intereses, interés compuesto, interés legal, interés legítimo, interés simple, intereses creados, intereses de demora, por el interés te quiero Andrés, punto de interés, tasa de interés
köken: lãi (“interest”) + suất (“rate”). The word order suggests this is a pseudo-Sino-Vietnamese formation. Perhaps also a non-Sino-Vietnamese reading of Chinese 利率 (SV: lợi luật), by way of replacing the systematic Sino-Vietnamese reading of 利 with the vulgarized one that gave rise to lãi as a common word.