optional is a valid English word

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

Meanings

Adjective (NOT COMPARABLE)

Not compulsory; left to personal choice; elective.
• Synonym: facultative, Thesaurus:optional

Noun (COUNTABLE)

Something that is not compulsory, especially part of an academic course.
(programming sometimes capitalized) In various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.

optional is a Scrabble valid word

o1p3t1i1o1n1a1l1

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

optional is an iScramble, QuickWords valid word

o1p2t3i4o5n6a7l8

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

Same letters words (Anagrams)

• ANTIPOLO
• ANTIPOOL
• NOPALITO
• POLITANO

Same letters plus one

• ANTIPOLIO
• INTRALOOP
• NOPALITOS
• OPTIONALS
• PLOUTONIA
• POLARITON
• POLITANOS
• PORTOLANI
• PROLATION

Same letters minus one

• LAPOINT
• LOPINTO
• OLATION
• OPALTON
• PANIOLO
• PAOLINO
• PLATOON
• POINTAL
• POLTINA
• TOPONIA