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100 percent

Completely, entirely, wholly.

Silenthistorical1.5K viewsLast reviewed Jun 29, 2026+ Add a definition
🗺️ Regional & Other
3 definitions
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Global
#1·Apr 26, 2026GlobalWork-OK

Completely, entirely, wholly.

I can assure you the we are 100 percent with you in this matter.
Cluster: agreement
Heard in the wild
  • “02. **[^](https://en.wikipedia.org/wiki/100_percent_corner#cite_ref-2 "Jump up")**["The '100 Percent Corner' Moves Downtown"](https://mithun.com/2015/01/05/100-percent-corner-moves-downtown/). _Mithun_.”

  • “The state's governor has signed a landmark bill setting a goal of 100 percent clean energy for the state's electrical needs, by the year 2045. **Mario Tama/Getty Images** **hide caption** **toggle caption** Mario Tama/Getty Images Solar panels are mounted on the roof of the Los Angeles Convention Center on September 5.”

  • “Robot Dad Strikes Back")_, a second song of hers was used for the theme song, " [Family Party](https://en.wikipedia.org/wiki/Family_Party_(song) "Family Party (song)")".[\[7\]](https://en.wikipedia.org/wiki/Kimi_ni_100_Percent#cite_note-7) "Kimi ni 100 Percent" was written to have lyrics that would make children happy.”

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Global
#2·Apr 26, 2026GlobalFormal

complete, entire, whole.

We are willing to provide 100 percent mortgages.
For parents

100 percent means complete, entire, whole.. It's mostly used in casual online conversation. It's casual and generally safe with friends and online. It's standard online vocabulary; nothing inherently concerning about hearing it.

For ESL learners

'100 percent' (often written '100%') in spoken English is an emphatic agreement equivalent to 'absolutely' or 'definitely', not a literal mathematical claim. Register is casual and conversational; in business writing prefer 'fully agree' or 'completely'. The phrase can also intensify a description ('that's 100% him' = 'that is totally typical of him'). A common learner mistake is to over-use it as a formal modifier in essays; it sounds slangy. Pronounce 'percent' as two syllables, stress on the second. The clipped form 'a hundred' is also heard with the same meaning.

Cluster: agreement
Heard in the wild
  • “Robot Dad Strikes Back")_, a second song of hers was used for the theme song, " [Family Party](https://en.wikipedia.org/wiki/Family_Party_(song) "Family Party (song)")".[\[7\]](https://en.wikipedia.org/wiki/Kimi_ni_100_Percent#cite_note-7) "Kimi ni 100 Percent" was written to have lyrics that would make children happy.”

  • “02. **[^](https://en.wikipedia.org/wiki/100_percent_corner#cite_ref-2 "Jump up")**["The '100 Percent Corner' Moves Downtown"](https://mithun.com/2015/01/05/100-percent-corner-moves-downtown/). _Mithun_.”

  • “The state's governor has signed a landmark bill setting a goal of 100 percent clean energy for the state's electrical needs, by the year 2045. **Mario Tama/Getty Images** **hide caption** **toggle caption** Mario Tama/Getty Images Solar panels are mounted on the roof of the Los Angeles Convention Center on September 5.”

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Global
#3·Apr 26, 2026GlobalWork-OK

(colloquial) Wholly sure; confident in one's knowledge.

He has a 100 percent record of success.
For ESL learners

'100 percent' (often written '100%') in spoken English is an emphatic agreement equivalent to 'absolutely' or 'definitely', not a literal mathematical claim. Register is casual and conversational; in business writing prefer 'fully agree' or 'completely'. The phrase can also intensify a description ('that's 100% him' = 'that is totally typical of him'). A common learner mistake is to over-use it as a formal modifier in essays; it sounds slangy. Pronounce 'percent' as two syllables, stress on the second. The clipped form 'a hundred' is also heard with the same meaning.

Cluster: agreement
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.

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