Word.ws English Dictionary

Past tense of infest

regular verb

The past tense of infest is infested. The past participle is also infested.

Forms of infest

Base form (V1)infest /ɪnˈfɛst/
Past tense (V2)infested
Past participle (V3)infested
Present participleinfesting
Third person singularinfests

Infested in a sentence

  • The infested house needs a thorough cleansing before being inhabitable again.From the entry thorough
  • Fiona rapidly discovered that the hotel was infested with bedbugs.From the entry bedbug
  • “A nanite cluster has infested the resort, consuming metal to self-replicate.2024 October 31, Stephanie Amante-Ritter, “The Best Exotic Nanite Hotel” (0:48 from the start), in Star Trek: Lower Decks, season 5…. From the entry nanite
  • That triangle of tangled undergrowth was infested with clothes-grabbing burdocks (“buzzies” we called them) and beggar's ticks.2015, Jim Bennet, South End Boy: Growing up in Halifax in the tumultuous '30s and '40s, →ISBN. From the entry buzzie
  • Lucuma salicifolia (canistal) and Micropholis mexicana (wild apricot) are the most infested fruit species.2013, Martin Aluja, Fruit Flies: Biology and Management, page 384. From the entry fructification

Meaning of infest

  1. verb To inhabit a place in unpleasantly large numbers; to plague, harass.
  2. verb To invade a host plant or animal.
  3. adjective Mischievous; hurtful; harassing.

Full definition of infest

Questions about the past tense of infest

What is the past tense of infest?
The past tense of infest is infested.
What is the past participle of infest?
The past participle of infest is infested.
Is infest a regular or irregular verb?
Infest is a regular verb: its past tense adds -ed.

Source and license

Adapted from Wiktionary: infest (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 infest.” Word.ws, https://word.ws/past-tense/infest. Based on Wiktionary, CC BY-SA 4.0.