Fast Synonyms and Antonyms

Accomplished in very little time
  1. slow
Permanent in color
  1. colorfast
  2. indelible
  3. fadeproof
  4. durable
  5. lasting
  6. washable
  7. vat-dyed
  8. waterproof
  9. fade-resistant
Persistently holding to something
Adhering firmly and devotedly, as to a person, a cause, or a duty
In a rapid way
Firm in loyalty:
  1. faithful

Words Related to Fast

Related words are words that are directly connected to each other through their meaning, even if they are not synonyms or antonyms. This connection may be general or specific, or the words may appear frequently together.