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Remember this!

The past tense form of 'constrain' is constrained. Example: They constrained their spending during the economic downturn. (They constrained their spending during the economic downturn.)

Definition of “constrain”

to restrict or limit someone or something
to keep within certain limits or boundaries
to hold back or restrain

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	constrained
Past Continuous	constraining
Past Perfect	constrained

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

The company constrained its budget to reduce expenses.

Example

I constrained myself from making impulsive decisions.

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, they were constraining their actions to avoid conflicts.

Example

I wasn't constraining my creativity in any way.

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 end of the project, they had constrained their resources to meet the deadline.

Example

She had constrained her emotions throughout the difficult situation.

Is constrained an irregular verb in the past?

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

Learn More About Tenses

Discover the present tense of constrain!

Discover the future tense of constrain!