omni
The prefix "omni-" means all or every. It is derived from the Latin word "omnis" which also means all.
"doubtful" does not have a prefix. It does, however, have a suffix ('-ful').
The prefix for inadequate is in-. The prefix in- means not.
The prefix "con-" means "with."
The prefix is ap-. This prefix means to or toward.
The prefix intra- means inside or within.
The prefix is in. The prefix in- means not.
The prefix is in-. This prefix means not.
The prefix is in-. This prefix means not.
"Ann-" is a prefix that means "yearly" or "occurring every year." It is often used in words related to annual events or time cycles.
The prefix 'in-' means not.
The prefix for include is in-. This prefix means not.