betrayal (English)

Where does "betrayal" come from?

The English noun 'betrayal' is formed from the verb 'betray' combined with the suffix '-al'[1]. The root verb descends from Middle English 'betrayen'[2]. That Middle English term incorporates a prefix tracing back through Old English and Proto-Germanic forms ultimately derived from Proto-Indo-European '*h₁epi'[2][3]. Additionally, the modern sense of 'betray' meaning to disclose or reveal unintentionally was influenced by the similar English word 'bewray'[2].

Open questions

• The similarity between the English root and certain Germanic forms like German 'betrügen' is considered coincidental. [2]
• The Proto-Indo-European source '*h₁epi' may represent a locative case derived from an earlier root meaning back. [5]

Full etymology tree

• betrayal (English), 'The act of betraying.'
  • affix betray (English), 'To deliver into the hands of an enemy by treachery or fraud, in violation of trust; to give up treacherously or faithlessly.'
    • inherited betrayen (Middle English)
      • prefix be- (Old English), 'a productive prefix usually used to form verbs and adjectives, especially'
    • influenced by bewray (English), 'To accuse; malign; speak evil of.'
  • suffix -al (English), 'Of or pertaining to. Adjectival suffix appended to various words, often nouns, to produce an adjective form. Often added to words of Latin origin, but used with other words also.'

Ancestors

• betray (English)
• -al (English)

Descendants and derived words

• counterbetrayal (English)
• nonbetrayal (English)
• rebetrayal (English)
• self-betrayal (English)

Related words

• ally (English)

Sources

1. betrayal (English) - Wiktionary
2. betray (English) - Wiktionary
3. bi (Proto-Germanic) - Wiktionary
4. bi- (Proto-Germanic) - Wiktionary
5. h₁epi (Proto-Indo-European) - Wiktionary

Updated October 2026

More words starting with B

Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris