Misbitter - to make something bitter or resentful.
"Second-hand" is a word that starts with the prefix "se-".
The word you are looking for is "supervisor."
The prefix added to the word "approve" to make it its opposite is "dis-", resulting in the word "disapprove."
Pre-The prefix for prefix is pre; because it's before the root word fix.
Monthly doesn't have a prefix. You add the prefix bi- to it to make the word bi-monthly.
It doesn't have a prefix. Or a suffix. It is one root word.
annoyed
Aftershock Aftershock
consequence
Dodecagon
conifer
inarticulate
bereaved bitter blue
anti-gravity
Bibliography, bibliophile.
decade
The word you are looking for is "supervisor."