Plontless or Plaintless: How To spell?

The word Plontless is misspelled against Plaintless, an adjective meaning "Without complaint; unrepining."

Word contains consecutive vowels 'AI' in between alphabets pl & ntless is misspelled as 'O'
Wrong Spelling:  pl-o-ntless 
Correct Spelling:  pl-ai-ntless 
Find more incorrect spellings of Plaintless to spell right way.

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