substack is a valid English word

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

Meanings

Noun (COUNTABLE)

(maths) A subset of a stack

substack is not a Scrabble valid word

substack

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

substack is not an iScramble, QuickWords valid word

substack

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

Same letters words (Anagrams)

• SACKBUTS
• SUBTACKS

Same letters plus one

• BUCKSTAYS
• SACKBUTTS
• SLACKTUBS
• STARBUCKS
• SUBSTACKS
• SUBTRACKS

Same letters minus one

• SACBUTS
• SACKBUT
• SUBACTS
• SUBTACK
• SUBTASK