fallback is a valid English word

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

Meanings

Noun (COUNTABLE AND UNCOUNTABLE)

An act of falling back.
• A failure of one of the rocket's first-stage engines just after liftoff would result in a destructive pad fallback.
A backup plan or contingency strategy; an alternative which can be used if something goes wrong with the main plan; a recourse.
• As a fallback, I suppose we can use typewriters if the word processing system fails.
(construction) A reduction in bitumen softening point, sometimes called refluxing or overheating, in a relatively closed container.

Adjective (NOT COMPARABLE)

That can be resorted to as a fallback.
• a fallback plan

Verb

Misspelling of fall back.

fallback is a Scrabble valid word

fallback

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

fallback is an iScramble, QuickWords valid word

fallback

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

Same letters words (Anagrams)

• BACKFALL

Same letters plus one

• BACKFALLS
• FALLBACKS

Same letters minus one

• BLALACK