Word.ws English Dictionary

Past tense of ruin

regular verb

The past tense of ruin is ruined. The past participle is also ruined.

Forms of ruin

Base form (V1)ruin /ˈɹuː.ɪn/
Past tense (V2)ruined /ˈruː.ɪnd/
Past participle (V3)ruined /ˈruː.ɪnd/
Present participleruining
Third person singularruins /ˈɹu.ɪnz/

Less standard forms: ruint (nonstandard).

Ruined in a sentence

  • He ruined his new white slacks by accidentally spilling oil on them.
  • My car breaking down just as I was on the road ruined my vacation.
  • The bumpers and front tyres were ruined, but the body of the car was in remarkable shape.From the entry body
  • I bought a new table out of necessity. My old one was ruined.From the entry necessity
  • The school was in sore need of textbooks, theirs having been ruined in the flood.From the entry sore

Meaning of ruin

  1. noun The remains of a destroyed or dilapidated construction, such as a house or castle.
  2. noun The state of being a ruin, destroyed or decayed.
  3. noun Something that leads to serious trouble or destruction.

Full definition of ruin

Questions about the past tense of ruin

What is the past tense of ruin?
The past tense of ruin is ruined.
What is the past participle of ruin?
The past participle of ruin is ruined.
Is ruin a regular or irregular verb?
Ruin is a regular verb: its past tense adds -ed.
Is ruint correct?
ruint is marked nonstandard in Wiktionary. The usual past tense of ruin is ruined.

Source and license

Adapted from Wiktionary: ruin (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Past tense of ruin.” Word.ws, https://word.ws/past-tense/ruin. Based on Wiktionary, CC BY-SA 4.0.