faithful

詳細解釋：

faith.ful

adj.（形容詞）
Adhering firmly and devotedly, as to a person, a cause, or an idea; loyal.
忠心的：對人、觀點或事物絕對堅定和效忠的；忠誠的
Having or full of faith.
充滿信心的
Worthy of trust or belief; reliable.
可信的，可靠的：值得信任或信賴的；可信賴的
Consistent with truth or actuality:
符合事實的：與事實或實際一致的：
例句：
a faithful reproduction of the portrait.
與畫像一致的複製品

n.（名詞）
【複數】 faithful 或 faith.fuls
The practicing members of a religious faith, especially of Christianity or Islam:
信徒：職業教徒，尤指基督教或 * 教徒：
例句：
a pilgrimage to Mecca made by the faithful.
教徒前往麥加朝聖的旅途

A steadfast adherent of a faith or cause:
忠誠分子：對事業或信仰的堅定不移：
例句：
a meeting of the party faithful.
對黨效忠的聚會

【引伸】
faith.fully
adv.（副詞）
faith.fulness
n.（名詞）
<參考辭彙><同義詞>faithful,loyal,true,constant,fast,steadfast,staunchThese adjectives mean adhering firmly and devotedly to someone or something, such as a person, cause, or duty, that elicits or demands one`s fidelity.
如下形容詞都有對人、事，比如人、事業或責任等堅定和忠誠的意思。
Faithful andloyal both suggest undeviating attachment; the words are often interchangeable,thoughloyal is the term more often applied to political allegiance:
Faithful 和loyal 都含有對感情的忠貞； 兩個單詞可以互換，但loyal 更強調政治上的絕對效忠：
例句：
a faithful employee;
效忠的雇員；

例句：
gave faithful service;
提供忠誠的服務；

例句：
a loyal companion;
忠誠的夥伴；

例句：
a loyal citizen.
履行義務的公民。

True implies steadiness, sincerity, and reliability:
True 含有堅定、忠誠和依賴的意思：
例句：
.I would be true, for there are those who trust me. (Howard Arnold Walter).
.我會很忠誠，因為有那些相信我的人的存在. （霍華德·阿諾德·沃爾特）。

Constant stresses uniformity and invariability:
Constant 強調獨立性和不可變性：
例句：
.But I am constant as the northern star. (Shakespeare).
.但我會像北極星一樣永不動搖. （莎士比亞）。

Fast suggests loyalty that is not easily deflected:
Fast 表示忠誠不會輕易改變：
例句：
fast friends.
忠實的朋友。

Steadfast strongly implies fixed, unswerving loyalty:
Steadfast 著重強調不變的依附：
例句：
a steadfast ally.
固定聯盟。

Staunch even more strongly suggests unshakable attachment or allegiance:
Staunch 更強調不動搖的依附或忠誠：
例句：
.He lived and died a staunch loyalist. (Harriet Beecher Stowe).
.他自生至死都是一個效忠的保皇黨人. （哈瑞特·比舍·史托）