to thin out
- phrasal verb
- /θɪn aʊt/
- After lunch, the number of customers in the cafe started to thin out, and the atmosphere became quieter.
- crowds thin out
- traffic thins out
- trees thin out
Examples
-
The traffic moved a few feet, then seemed to start thinning out.
Fiction book (1996) -
After a while, traffic thinned out, and they drove by the station again.
Fiction book (2002) -
Eventually, the stream of animals began to thin out, and we knew it was nearly over.
Fiction book (1994) -
Come on over and have a look when this crowd thins out.
Fiction book (2002) -
The number of houses thinned out as the bus climbed the mountain slope.
Fiction book (2002) -
Around him, the crowd is thinning out as men trot in to apply for their respective jobs.
Fiction book (1994) -
Once past the airport, the traffic thinned out and the green of the parkway enveloped them.
Fiction book (2001) -
The long parade of students thins out as it passes the Heights business section with its sandwich shops and candy stores.
Fiction book (2002) -
When Cory and Nat went downstairs again with their drawings, the crowd had thinned out a bit.
Fiction book (1996) -
The forest had begun to thin out; Lucian glimpsed high crags in the distance, and Joy-in-the-Dance headed straight toward them.
Fiction book (1995)
Synonyms
To become smaller or less in number over time
To become less thick or crowded, for example a crowd
To become less in number or amount
To become less in amount or quality
To slowly become weaker and then stop
To become smaller or weaker over time until it stops
Slowly get smaller in number or amount until nothing remains
To become slowly smaller or less until almost nothing remains
To make air or other things thinner so they have more empty space
Antonyms
How Dense
Surface Forms
Morphology
The verb 'thin' (to make less dense) combined with the particle 'out' produces a meaning that is directly inferable — to make fewer or more sparsely distributed — following a common English verb + particle composition. This compositional pattern is cross-linguistically common and would be understandable to a B1 learner who knows both constituents.
Etymology
The verb thin out paints a simple picture: as people leave, the group becomes more spread out and looks thin. So it means 'to become fewer or less crowded'.