The word Eficacious is misspelled against Efficacious, meaning "Effective."
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Efficacious has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings E & icacious which should not be misspelled with single 'F'
Wrong Spelling: E-f-icacious
Correct Spelling: E-ff-icacious
Check more misspelled words of Efficacious to spell it correct.