Translation guide
The English word "faithful" covers several distinct meanings: loyalty in relationships, accuracy in representation, religious devotion, and reliability. This guide organizes Japanese expressions by these meanings, from most common to niche.
He is a faithful husband.
I am blessed with faithful friends.
Describes someone devoted single-mindedly to one person, often in love. Has a nuance of unwavering dedication.
She loves him faithfully.
Literally "does not cheat." A direct way to say someone is faithful in a romantic sense.
He is absolutely faithful.
A formal or literary term for chastity and faithfulness, often used for women historically.
She was known as a faithful wife.
Describing something that is true to the original, such as a translation, reproduction, or account.
The most direct equivalent for "faithful" in the sense of accuracy. Used for translations, reproductions, and descriptions.
This is a faithful translation of the original text.
The movie is faithful to the original work.
Means "accurate" or "precise." Often used when faithfulness implies exactness.
His report was faithful (accurate).
Means "as is" or "unchanged." Used for faithful reproduction without alteration.
We reproduced the colors faithfully.
Describing a person who is devoted to their religion or beliefs.
Means devout or pious. The standard term for religious faithfulness.
She is a faithful Christian.
Literally "thick with faith." A slightly more emphatic way to say devout.
Can also be used for religious faithfulness, but less common than 信心深い.
a faithful servant of God
Describing a person, animal, or thing that can be trusted and is consistently supportive.
忠実 (ちゅうじつ) emphasizes loyalty to a person, cause, or original. 誠実 (せいじつ) emphasizes sincerity and honesty in character. For romantic faithfulness, 誠実 is more common; for accuracy, 忠実 is standard.
While 忠実 can technically be used, it sounds like loyalty to a master, not romantic fidelity. Use 誠実 or 浮気をしない instead.
Faithful believers gathered.