Stuned or Stained: How To spell?

The word Stuned is misspelled against Stained, which is past tense of "Stain"

Word contains consecutive vowels 'AI' in between alphabets st & ned is misspelled as 'U'
Wrong Spelling: st-u-ned
Correct Spelling: st-ai-ned
Check more misspelled words of Stained to spell it correct.