fastly is a valid English word

Scrabble validity: valid ( international - Sowpods ), invalid ( US - Twl06 )
iScramble validity: invalid
QuickWords validity: invalid

Meanings

Adverb (COMPARABLE)

In a secure or firm manner; securely
• Synonym: fast, firmly, securely, tightly
(nonstandard) quickly

fastly is a Scrabble valid word

fastly

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is not valid in Scrabble ✘
• 00 points

fastly is not an iScramble, QuickWords valid word

fastly

• The word is not valid in iScramble ✘
• The word is not valid in QuickWords ✘
• 00 points

Same letters words (Anagrams)

• none

Same letters plus one

• FALSITY
• FEASTLY
• FLAYEST
• FLYPAST
• FLYSWAT

Same letters minus one

• FALSY
• FALTS
• FATLY
• FLATS
• FLAYS
• LAYST
• SALTY
• SLATY
• STYAL
• TAYLS