suddenly; with a jerk; in one go
Describes a quick, forceful action or change: pulling, pushing, drinking, or a sudden movement.
彼はぐっとロープを引っ張った。
He pulled the rope with a jerk.
He gulped down the beer in one go.
considerably; a lot; very much
Indicates a significant increase in degree or intensity, often with adjectives or verbs of change.
The new job has become considerably more difficult.
This one is a lot tastier.
Used for applying steady pressure, gripping, or bearing down with force.
I pressed the lid down firmly.
I clenched my teeth and held on tightly.
Expresses being strongly affected emotionally, often with verbs like 感動する or 心を打たれる. Sense 4 (completely at a loss) is a rarer, similar emphatic use.
I was deeply moved by that story.
I was completely at a loss for words at his remark.
I gave the rope a sharp pull.
He gulped down the beer in one go.
The temperature rose considerably.
She held back her tears.
He put firm pressure into his grip.
I was deeply moved by that movie.
ぐっと often describes a sudden, forceful jump in degree, while めっきり describes a noticeable change that becomes apparent over a period of time, such as a season turning colder.
A mimetic adverb (擬態語) derived from the sound-symbolic element ぐっ, which suggests forcefulness or suddenness. The exact origin is uncertain.