Past Tense of Upset
“Upset” has a zero-change verb pattern: upset → upset → upset, with “upsetting” as the -ing form. The same spelling also appears as a noun and adjective, so identify the verb role before applying the conjugation rule.
The simple past and past participle of the verb “upset” are both “upset.”
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| completed action in simple past | upset | The verb keeps the same form. |
| past participle after have/has/had | upset | The participle is also “upset.” |
| progressive form | upsetting | The -ing form doubles the final consonant. |
Quick tests
Verb-form test
Do you need the simple past or past participle of the verb “upset”?
If yes: Use “upset.”
If no: If you need the progressive form, use “upsetting”; otherwise check whether “upset” is functioning as an adjective or noun.
Caveat: Because “upset” can also be an adjective or noun, identify its grammatical role before treating it as a verb form.
Examples
The news upset everyone yesterday.
The simple past remains “upset.”
The delay has upset our schedule.
The past participle also remains “upset.”
The sudden change is upsetting the team.
The progressive form is “upsetting.”
Further guidance
Core difference
Use “upset” for both the simple past and the past participle; context and auxiliaries show the grammatical role.
Fast Test
If the clause needs a past form, keep “upset”; use “upsetting” only for the progressive or -ing form.
Usage Boundary
Do not form the standard past as “upsetted.” Keep the verb separate from adjective and noun uses that share the spelling.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- UPSET Definition & Meaning - Merriam-Webster (opens in a new tab)Merriam-Webster · Merriam-Webster records upset; upsetting; upsets, preserving upset as the past form rather than adding -ed.
- UPSET — Cambridge Dictionary (opens in a new tab)Cambridge University Press & Assessment · Direct dictionary evidence for upset + to-infinitive and upset about + complement