Syllable CounterHaiku CheckerSyllable DictionaryRulesPoetry
fastly
adverb
See more 2-syllable adverbs

How to pronounce fastly:

Definition of fastly:

fastly (adverb):
fast

Antonyms for fastly:

sluggishlyslowly

Other 2-syllable words like fastly

Here are some other common words that have 2 syllables, like fastly does.

See all 2-syllable words
Syllable Quiz
How many syllables in the word perfectly?

Question 1 of 5

Syllable Fun Fact
Light syllables, having short vowels and no ending consonant, often occur in unstressed positions in polysyllabic words.

You, too, can become a syllable pro and wow your friends, family, and pets!

Learn more syllable fun facts
Trending words

These words are popular right now. Visit each word to master its syllable count.

  1. surreptitiously
  2. heaven
  3. seriously
  4. unbeknownst
  5. convenient
  6. colleague
  7. confide
  8. equivocate
  9. infatuated
  10. slovenly


Syllable Counter is reader-supported. When you purchase something through one of our links, we may earn a small commission at no cost to you.

©2025 SyllableCounter.io