thirty

A1 Topic:Numbers & Quantity

US /ˈθɝti/ UK /ˈθɜːti/ See IPA manual

Freq #3561

Meanings

1

num
The number 30; three times ten.

My brother turns thirty next month.

Thesaurus

Word family

Forms thirties

Etymology

From Middle English thirty, metathetic alternant of Middle English thriti, þrittiȝ, from Old English þrītiġ (“thirty”), from Proto-Germanic *þrīz tigiwiz (“thirty”, literally “three tens”), equivalent to three + -ty. Cognate with Scots therty, tretty (“thirty”), West Frisian tritich (“thirty”), Dutch dertig (“thirty”), German dreißig (“thirty”).

thirty Middle English thriti Middle English þrītiġ Old English *þrīz tigiwiz Proto-Germanic

View etymology graph ->

Topics

Numbers & Quantity

External links

# thirty

**Type:** Word
**Level:** A1
**Part of speech:** num
**IPA (US):** /ˈθɝti/
**IPA (UK):** /ˈθɜːti/
**Frequency rank:** 3561

## Meanings
1. The number 30; three times ten.

## Examples
- My brother turns thirty next month.

## Roots and Affixes
- Root: thirty
- Root: thriti
- Root: þrītiġ
- Root: *þrīz tigiwiz

## Etymology
From Middle English thirty, metathetic alternant of Middle English thriti, þrittiȝ, from Old English þrītiġ (“thirty”), from Proto-Germanic *þrīz tigiwiz (“thirty”, literally “three tens”), equivalent to three + -ty. Cognate with Scots therty, tretty (“thirty”), West Frisian tritich (“thirty”), Dutch dertig (“thirty”), German dreißig (“thirty”).

## AI Etymology
Thirty is from Middle English thirty, metathetic alternant of Middle English thriti, þrittiȝ, from Old English þrītiġ (“thirty”), from Proto-Germanic *þrīz tigiwiz (“thirty”, literally “three tens”), equivalent to three + -ty. Cognate with Scots therty, tretty (“thirty”), West Frisian tritich (“thirty”), Dutch dertig (“thirty”), German dreißig (“thirty”). In present-day use, it means the number 30; three times ten.

## Topics
- Numbers & Quantity

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