How to spell HELPFULT correctly?

The correct spelling of "helpfult" should be "helpful". Possible suggestions for correcting this misspelling include using a spell checker, checking the spelling in a dictionary or simply asking someone else to proofread the text for errors.

• helpful The advice you gave me was very helpful, thank you.
• helpfully She helped me with my homework very helpfully.

Putrefication

• nitrification
• petrifaction
• purification
• putrefaction
• putrification
• vitrification