English Reference

Phrasal verb

thin out

Definition

phrasal verb. to make something less crowded or dense by removing some parts; it also describes when a group of people starts to leave so there are fewer left.

phrasal verb. to reduce the number or density of something in a specific area; can be used transitively (to remove items) or intransitively (to become less numerous).

Examples

“The crowd begins to thin out after the main event.”

“You should thin out the seedlings in the garden so the strongest plants have more room to grow.”

“As the mist began to thin out, the jagged peaks of the mountain range finally became visible to the rescue team.”

Examples

simple

“The crowd begins to thin out after the main event.”

contextual

“You should thin out the seedlings in the garden so the strongest plants have more room to grow.”

complex

“As the mist began to thin out, the jagged peaks of the mountain range finally became visible to the rescue team.”

Usage

often used in gardening, hair care, or describing crowds and traffic.

Teaching tip

use the image of a forest or a head of hair to explain density; contrast with 'thicken' as the natural opposite process.

Phrasal verb

Particles

out

Separability

optional

Pattern

thin (+ object) + out

Synonyms

Antonyms

thickencongestgather

Grammar

This entry

Level
B2 · Upper Intermediate
Updated

Scan code

englishreference.com/q/thin-out

English Reference