Speed and swiftness:
* Rapidly: This implies a high speed.
* Swiftly: Similar to "rapidly," emphasizing speed and lack of delay.
* Hurriedly: Suggests a sense of urgency or haste.
* Expeditiously: Emphasizes efficiency and promptness.
* Nimbly: Implies agility and dexterity.
* Promptly: Indicates doing something without delay.
* Instantly: Implies immediate action.
Other synonyms:
* Shortly: Refers to a short duration of time.
* Soon: Indicates something happening in the near future.
* In a flash: Suggests something happening very fast.
* In a jiffy: An informal way of saying "quickly."
* Right away: Means immediately.
More descriptive words:
* Briskly: Implies a lively pace.
* Snappily: Suggests something done with confidence and speed.
* Sped up: Emphasizes an increase in speed.
* With haste: Indicates urgency.
* In a flurry: Suggests a series of rapid actions.
The best word to use will depend on the specific context and the effect you want to achieve.