This is the 2855th most frequent Japanese word.
がっ
"がっ" is not a standalone word; it is often part of onomatopoeic expressions or interjections, conveying suddenness or impact depending on the context.
In this sentence, 'がっ' is used as an onomatopoeia to represent a sudden, loud noise such as a door slamming shut.
ドアががっ！と閉まりました。
The door shut with a loud 'bang!'
Here, 'がっ' is part of the word 'がっかり' which means 'disappoint,' showing a feeling of letdown or dissatisfaction.
彼の動きががっかりさせる。
His behavior is disappointing.
In this sentence, 'がっ' is used to describe the action of drinking rapidly or in one go, providing vividness and immediacy to the action.