Detered or Deterred: How To spell?

The word Detered is misspelled against Deterred, which is past tense of "Deter"

Deterred has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings dete & ed which should not be misspelled with single 'R'
Wrong Spelling:  dete-r-ed 
Correct Spelling:  dete-rr-ed 
Explore spell check of Deterred to spell without errors.

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