CC-CEDICT: to weaken / to fall off
I find this counter-intuitive, since we have:
CC-CEDICT: to lower / to decrease / to reduce / to subtract / to diminish
CC-CEDICT: weak / feeble / young / inferior / (following a decimal or fraction) slightly less than
It seems like 减弱 should mean "reduce weakness" and therefore "strengthen", but it means the opposite. For comparison, 减肥 means "lose weight".
Question: Why does 减弱 (lit. "reduce weak") mean "to weaken"?