rapidly
/ˈræpɪdli/
adverb
- At a fast speed; quickly.
- She rapidly finished her homework so she could go outside.
- The population of the city grew rapidly over the last decade.
- The car sped rapidly down the highway.
- In a short amount of time; happening very soon after something else.
- The weather changed rapidly from sunny to stormy.
- The company's profits increased rapidly following the new product launch.
- His health declined rapidly after the infection.