Sath or Saith: How To spell?

The word Sath is misspelled against Saith, which is past tense of "Say."

Word contains consecutive vowels 'AI' in between alphabets s & th is misspelled as 'A'
Wrong Spelling:  s-a-th 
Correct Spelling:  s-ai-th 
Browse incorrect spellings of Saith to spell it good.

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