Ruder or Raider: How To spell?

The word Ruder is misspelled against Raider, a noun meaning "One who engages in a raid."

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

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