adverb, adverb taking the 'to' particle
rapidly; vigorously; by leaps and bounds; steadily
Describes something progressing quickly and energetically, often with a sense of momentum. Common with verbs of growth, increase, improvement, or movement.
This plant is growing rapidly.
His grades improved by leaps and bounds.
The child is growing taller by leaps and bounds.
The temperature has been steadily climbing.
The typhoon is rapidly approaching.
The fish pulled steadily and strongly at the bait.