The opposite of sever is conjoin.
Construct
The prefix un- makes the word "unsuitable."
The prefix is con
The prefix con- means "altogether."
The prefix is con-, meaning together or with.
The prefix is 'con'.
The prefix "con-" means "with."
The prefix of "convince" is "con-".
The prefix for conception is "con-".
The prefix for conductor is "con-".
The prefix for "contest" is "con-".
The prefix in "contribute" is "con-".