yonglong is a valid English word

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

Meanings

Proper noun

era name used by Liang Shidu (618–628)
era name used by Emperor Gaozong of Tang (680–681)
era name used by Wang Yanxi, emperor of Min (939–943)

yonglong is not a Scrabble valid word

y4o1n1g2l1o1n1g2

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

yonglong is not an iScramble, QuickWords valid word

y1o2n3g4l5o6n7g8

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

Same letters words (Anagrams)

• none

Same letters plus one

• ONGOINGLY

Same letters minus one

• GOLYGON