addition is a valid English word

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

Meanings

Noun (COUNTABLE AND UNCOUNTABLE)

(uncountable) The act of adding anything.
• The addition of five more items to the agenda will make the meeting unbearably long.
Anything that is added.
(uncountable) The arithmetic operation of adding.

addition is a Scrabble valid word

a1d2d2i1t1i1o1n1

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 10 points

addition is an iScramble, QuickWords valid word

a1d2d3i4t5i6o7n8

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 36 points

Same letters words (Anagrams)

• none

Same letters plus one

• ADDICTION
• ADDITIONS
• ADIANTOID
• INODIATED
• IODINATED

Same letters minus one

• DIDONIA