She was known as a forceful leader who inspired her team.

forceful 是由名词 force（力量）加上形容词后缀 -ful 构成的形容词，表示"强有力的"或"有说服力的"。force 本义是"力量"，-ful 后缀表示"充满...的"，所以 forceful 字面意思是"充满力量的"。