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Remember this!

The past tense form of 'obsess' is obsessed. Example: She obsessed over her performance in the play. (She obsessed over her performance in the play.)

Definition of “obsess”

to preoccupy or fill the mind of someone continually, intrusively, and to a troubling extent
to be constantly thinking about something or someone

Tense sentence structure and examples:

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Notes from a Native English Speaker

Here are the general structures of a present and past participle. Remember, some verbs have an irregular form and may not follow this structure: Present Participle: [Verb] -ing Past Participle: [Verb] -ed

Past Simple	obsessed
Past Continuous	obsessing
Past Perfect	obsessed

Past Simple

The simple past tense is used to describe completed actions or events that occurred at a specific point in the past.

Subject + Past Simple Verb + (Object)

Example

He obsessed over his appearance for hours.

Example

They obsessed about their upcoming presentation.

Past Continuous

The past continuous tense is used to indicate actions or events that were in progress or happening at a specific point in the past.

Subject + was/were + Present Participle + (Object)

Example

At that time, she was obsessing over her grades.

Example

I wasn't obsessing about what others thought of me.

Past Perfect

The past perfect tense is used to show that one past action or event occurred before another past action or event, emphasizing the order of events in the past.

Subject + had + Past Participle + (Object)

Example

By the time he realized it, he had obsessed over the issue for months.

Example

She had obsessed about the decision before making it.

Is obsessed an irregular verb in the past?

No, "obsessed" is not an irregular past tense verb.

Learn More About Tenses

Discover the present tense of obsess!

Discover the future tense of obsess!