# faithless

/fˈeɪθləs/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/faithless
Updated: 2026-06-22

## Definition

not being loyal or honest to someone or something you have promised to support. It describes a person who breaks their word or a relationship.

For teachers: lacking in faith or loyalty; disloyal or untrustworthy. Often used to describe a person who breaks a vow or a political party that fails to support its own candidate.

## Examples

- He felt betrayed by his faithless friend.
- The politician was criticized for his faithless behavior, as he had promised to support the bill but voted against it.
- The novel explores the emotional devastation of a faithless marriage, where the protagonist must navigate the ruins of a relationship built on a foundation of broken promises.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.