fir is a valid English word

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

Meanings

Adjective (NOT COMPARABLE)

(signal processing of a filter) Initialism of: w:finite impulse response; that has impulse response (or response to any finite length input) of finite duration.

Noun (COUNTABLE AND UNCOUNTABLE)

(aviation) Initialism of: w:flight information region; a specified region of airspace in which a flight information service (FIS) and an alerting service (ALRS) are provided
(South Asia Singapore policing) Initialism of: first information report.
(uncountable) Abbreviation of: far infrared or far infrared radiation.

fir is a Scrabble valid word

fir

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

fir is an iScramble, QuickWords valid word

fir

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

Same letters words (Anagrams)

• FRI
• IFR
• IRF
• RFI
• RIF

Same letters plus one

• FAIR
• FHIR
• FIAR
• FIER
• FIRE
• FIRK
• FIRM
• FIRN
• FIRO
• FIRR
• FIRS
• FIRY
• FLIR
• FMRI
• FRIE
• FRIG
• FRIM
• FRIS
• FRIT
• FRIX
• FRIZ
• FTIR
• GRIF
• ICRF
• IFOR
• IFRS
• IRFS
• NIRF
• ORIF
• RAFI
• REFI
• REIF
• RFID
• RFIS
• RIEF
• RIFA
• RIFE
• RIFF
• RIFS
• RIFT
• TIRF

Same letters minus one

• FI
• FR
• IF
• IR
• RF
• RI