stumper is a valid English word

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

Meanings

Noun (COUNTABLE)

One who stumps, or speaks, or orates, as a politician.
• He's not yet well known, but he's a good stumper.
(informal) A difficult puzzle or problem.
• Global warming is a real stumper.
(archaic slang) A boastful person.

stumper is a Scrabble valid word

stumper

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

stumper is an iScramble, QuickWords valid word

stumper

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

Same letters words (Anagrams)

• RESTUMP
• SUMPTER

Same letters plus one

• CEPSTRUM
• CRUMPETS
• DRUMSTEP
• DUMPSTER
• IMPUREST
• IMPUTERS
• JUMPSTER
• KEPSTRUM
• PERMUTES
• RESTUMPS
• RUMPTIES
• SHUMPERT
• SPECTRUM
• STRUMPET
• STUMPERS
• STUMPERY
• STUMPIER
• SUMPTERS
• TEMPURAS
• THUMPERS
• TRUMPERS
• TRUMPESE
• TRUMPETS
• TRUMPIES
• UPSTREAM

Same letters minus one

• ERUPTS
• ESTRUM
• MPRETS
• MUSTER
• MUSTRE
• MUTERS
• PUREST
• PURSET
• PUTERS
• SEPTUM
• SPETUM
• STUMER
• SUMTER
• TREMPS
• TRUMPS
• TURMES
• UPREST
• UPSERT