パタッとwith a light thud, with a flop, with a (light) clap, suddenly (stop, come to an end, etc.)

軽(かる)い仕切(しき)りがパタッと倒(たお)れました。

The light partition fell over with a flop. {with a light thud, with a flop, with a (light) clap, suddenly (stop, come to an end, etc.)}

パタッと会社(かいしゃ)に来(こ)なくなった社員(しゃいん)が心配(しんぱい)だ。

I'm worried about the employee who suddenly stopped coming to the company. {with a light thud, with a flop, with a (light) clap, suddenly (stop, come to an end, etc.)}

１０(じゅう)月(がつ)に入(はい)ってセミがパタッと鳴(な)き止(や)みました。

When October arrived, the cicadas suddenly stopped chirping. {with a light thud, with a flop, with a (light) clap, suddenly (stop, come to an end, etc.)}

少(すこ)し前(まえ)まで人気(にんき)だった俳優(はいゆう)がパタッと映画(えいが)に出(で)なくなった。

The actor who was popular until recently suddenly stopped appearing in movies. {with a light thud, with a flop, with a (light) clap, suddenly (stop, come to an end, etc.)}

パタッと倒(たお)れた子供(こども)は、直(す)ぐに起(お)き上(あ)がってまた走(はし)り始(はじ)めました。

The child who suddenly fell over, quickly got up and started running again. {with a light thud, with a flop, with a (light) clap, suddenly (stop, come to an end, etc.)}