English Reference

Word

faithfully

Phoneticsfaith·ful·ly, stress on the first syllable

US/ˈfeɪθfəɫi/

UK/fˈeɪθfəli/

Adverb of manner

Definition

adv. doing something in a loyal way or exactly as you were told. You use this when someone stays true to a person, a promise, or a set of facts.

adv. in a loyal and constant manner; with strict adherence to facts, a promise, or an original version.

Examples

“He served the company faithfully for thirty years.”

“The film adaptation follows the original novel faithfully, keeping every major character and plot point intact.”

“Despite the changing political climate, the secretary faithfully executed the duties of her office, ensuring that every document was archived according to the established protocol.”

Examples

simple

“He served the company faithfully for thirty years.”

contextual

“The film adaptation follows the original novel faithfully, keeping every major character and plot point intact.”

complex

“Despite the changing political climate, the secretary faithfully executed the duties of her office, ensuring that every document was archived according to the established protocol.”

Usage

Typically follows the verb it modifies or sits at the end of the clause.

Real-World Examples

“When wood rotted away, it left behind hollow molds that faithfully reflect its shape.”
Ars Technica 9 Oct 2026
“Military service is a duty to be performed "faithfully", and social service agents are "no exception", the court said.”
BBC News 1 Oct 2026

Etymology

From Middle English feithfulli, equivalent to faithful + -ly.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

ADVERB

faithfully(B2)

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference