decline

/dɪˈklaɪn/
verbIntermediate to gradually decrease or worsen
general

to gradually decrease in size, amount, or intensity

The number of students in the class declined after the school year started.

The number of students decreased after the school year began.

💡

Often used with 'in' or 'over' to specify the time period.

formal

to politely refuse an offer or invitation

She declined the invitation to the party.

She politely refused the invitation to the party.

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Used in formal or polite contexts to reject something.

🏥Medicine
general

to become weaker or less healthy

His health declined rapidly after the diagnosis.

His health worsened quickly after the diagnosis.

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Commonly used in medical contexts to describe deterioration.

Collocations

decline ina decrease in something specificdecline overa decrease over a period of timedecline to do somethingpolitely refuse to do something

Related Phrases

on the declinephrase
in the process of decreasing

💡Pro Tip

Formal vs. Informal Use

Use 'decline' in formal contexts to politely refuse something. In informal contexts, you might use 'refuse' or 'reject'.

Gold Rule

Preposition Usage

'Decline' is often followed by 'in' or 'over' to specify the time period of the decrease.

📖Word Origin

From Middle English declinen, from Old French decliner, from Latin declinare (to bend, turn aside, decline), from de- (down) + clinare (to bend).

📝Usage Notes

The verb 'decline' can be used both transitively (with an object) and intransitively (without an object). It is often used in formal contexts to politely refuse something.

Word Breakdown

de-
down, away
prefix
+
-cline
to bend, lean
root
English Dictionary