foo is a valid English word

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

Meanings

Noun (COUNTABLE)

(historical obsolete) Alternative form of fu: an administrative subdivision of imperial China; the capital of such divisions.
(programming) A metasyntactic variable used to represent an unspecified entity. If part of a series of such entities, it is often the first in the series, and followed immediately by bar.
• Suppose we have two objects, foo and bar.
(fandom slang)

Interjection

Expression of disappointment or disgust.
• Oh foo – the cake burnt!

foo is not a Scrabble valid word

foo

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

foo is an iScramble, QuickWords valid word

foo

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

Same letters words (Anagrams)

• OFO
• OOF

Same letters plus one

• BOOF
• COOF
• DOOF
• FLOO
• FOBO
• FOGO
• FOMO
• FOOB
• FOOD
• FOOF
• FOOK
• FOOL
• FOOM
• FOON
• FOOR
• FOOS
• FOOT
• FOTO
• FOUO
• GOOF
• HOOF
• IOOF
• LOOF
• MOFO
• MOOF
• OFOS
• OLOF
• OOFF
• OOFS
• OOFT
• OOFY
• OOMF
• POOF
• ROOF
• TOOF
• WOOF
• YOOF

Same letters minus one

• FO
• OF
• OO