形容詞 forceful:

1. characterized by or full of force or strength (often but not necessarily physical)
2. forceful and definite in expression or action
   同義詞：emphatic

1. The dramatist cut out a couple of scenes in his script to make the play more compact and forceful.
   那個劇作家刪掉了原稿中的兩場，使劇本更加緊湊，更加有力。
2. His forceful argument soon made the opposing speaker step down.
   他有力的論點很快就使對方的發(fā)言者認輸了。
3. A forceful shove or push.
   猛推有力的推或擠
4. His forceful arguments reduced his opponents to silence.
   他那有力的論點駁得對手啞口無言。

force.ful

adj.（形容詞）
Characterized by or full of force; effective.
強有力的：以力量為特征的或充滿力量的；有效的

【引伸】
force.fully
adv.（副詞）
force.fulness
n.（名詞）
Forceful, forcible, and forced have distinct, though related meanings. Forceful is used to describe someone or something that possesses or is filled with strength or force:
Forceful，forcible 和 forced 雖然相互關(guān)聯(lián)但具有不同的意義。 Forceful 用來表示具有或充滿了力量的某人或某物：
例句：
a forceful speaker;
有說服力的演說者；

例句：
a forceful personality.Forceful measures
堅強的個性。Forceful measures

may or may not involve the use of actual physical force.Forcible, by contrast, is most often used of actions accomplished by the application of physical force:
可能或可能不涉及到具體的物質(zhì)力量的使用。相反，forcible 最常用來指由體能的應用而完成的動作：
例句：
There had been a forcible entry.
強行進入。

例句：
The police had to use forcible restraint in order to arrest the suspect.
為了逮捕嫌疑犯警察不得不使用強制手段。

Forcedis used to describe an act or a condition brought about by control or an outside influence:
Forced用來表示由強制或外界影響而產(chǎn)生的行為或狀態(tài)：
例句：
a forced smile;
勉強一笑；

例句：
a forced landing;
被迫著陸；

例句：
forced labor.
被迫的勞動力