The prefix in consent is CON, not CO. CON typically means "with" (chili con carne -- chili with meat), and SENT tends to mean "feel", "feeling", or something along those lines (Spanish sentir -- to feel, Latin sentio).
CO as a prefix tends to imply two sentient beings (rather than objects) doing something together -- cohabit, cooperate, communicate, etc.
The prefix "DIS" in disavow most likely means:
I'm pretty sure that -gon is the root word and it means angles. The prefix poly- means many and is most likely what you're asking for.
greece most likely not sure
The most common prefix for the word stop is non. This makes the word nonstop and that prefix means not.
The prefix fed- means trust or faith. One of the most common words with this prefix is federal.
One of the most main prefixes to add to cise is pre-. This prefix means before and makes precise.
'dis' measn to moves something. This is the most common meaning, although this prefix has several.
Most likely. . . At age 18.
Un- is the most common prefix for available, creating the word unavailable. It means not handy or not obtainable.
men is the prefix of mensis, if you ever have trouble with prefixes, most prefixes are the very first syllable of a word
Most likely 17 with parent consent, otherwise you have to be 18
The Greek prefix for five is penta-.