How to spell SINCEHE correctly?

Possible correct suggestions for the misspelling "sincehe" could be since, since he, since her, since we, and since they. It depends on the intended context. If it's referring to an action done by someone specifically, then "since he" or "since she" would be appropriate. If it's a general statement, then "since" or "since we" could be used.

• Since Since the beginning of the pandemic, there has been a surge in demand for personal protective equipment.
• sincere She sent a sincere apology to her friend for forgetting her birthday.
• sincerer I wish you were sincerer in your apologies.

Putrefication

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