Icelandic edit

Etymology edit

From þumalputti (thumb) +‎ regla (rule).

Pronunciation edit

  • IPA(key): /ˈθʏːmal.pʰʏhtaˌrɛkla/

Noun edit

þumalputtaregla f (genitive singular þumalputtareglu, nominative plural þumalputtareglur)

  1. rule of thumb

Declension edit