1. Verb:
* Quickened is the past participle of the verb "quicken".
* Quicken means to make something faster, more active, or more lively.
* Other forms of the verb: quickens, quickening, quickened.
2. Adjective:
While "quickened" is not typically used as an adjective, you could argue that it has the same meaning as "quick".
* Quick means happening or done speedily or promptly.
* Other forms of the adjective: quicker, quickest.
3. Related words:
There are other words related to "quicken" that share a similar meaning:
* Accelerate: to increase in speed or rate of progress.
* Hasten: to hurry or speed up.
* Expedite: to make something happen faster.
* Vivify: to give life or energy to something.
* Revive: to restore to life or consciousness.
The word family you choose will depend on the specific context and meaning you are trying to convey.