sirtf is a valid English word

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

Meanings

Proper noun

(space US NASA) Initialism of: Space Infrared Telescope Facility.

sirtf is not a Scrabble valid word

s1i1r1t1f4

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

sirtf is not an iScramble, QuickWords valid word

s1i2r3t4f5

• The word is not valid in iScramble ✘
• The word is not valid in QuickWords ✘
• 15 points

Same letters words (Anagrams)

• FIRST
• FRIST
• FRITS
• FTIRS
• RIFTS

Same letters plus one

• AFRITS
• DRIFTS
• EFRITS
• FERSIT
• FIREST
• FIRSTE
• FIRSTS
• FIRTHS
• FISTER
• FLIRTS
• FORTIS
• FRAIST
• FREITS
• FRISTS
• FRITHS
• FRITOS
• FRUITS
• FTIRAS
• GRIFTS
• IFRITS
• IFTARS
• REFITS
• RESIFT
• RIFEST
• SAFRIT
• SHRIFT
• SIFTER
• STRIFE
• TAFSIR

Same letters minus one

• FIRS
• FIST
• FITS
• FRIS
• FRIT
• FTIR
• IFRS
• IRFS
• ISTR
• ITFS
• RFIS
• RFTS
• RIFS
• RIFT
• RIST
• RITS
• RTIS
• SIFT
• SIRT
• STIR
• TFRS
• TIFS
• TIRF
• TIRS
• TRFS
• TRIS