whomsoever is a valid English word

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

Meanings

Pronoun

Whatever person or persons (as object of a verb or preposition): emphasised or elaborated form of whomever.
• We shall tell the good news to whomsoever we meet.

whomsoever is a Scrabble valid word

whomsoever

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

whomsoever is an iScramble, QuickWords valid word

whomsoever

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

Same letters words (Anagrams)

• HOWSOMEVER
• WHOSOMEVER

Same letters plus one

• HOWSOMDEVER
• WHOSOMDEVER

Same letters minus one

• HEMOVORES
• HOWSOEVER
• WHORESOME
• WHOSOEVER