There's a great list in the Oxford English Dictionary - your public library is sure to have a copy.
Nonpoisonous begins with the prefix non. Nonexistent begins with the prefix non.
The prefix non- means not or nine. A couple common words with this are nonsense and nonagon.
The prefix "non-" can be added to most words to indicate negation or absence. However, not all words can have "non-" as a prefix, and its usage is dependent on the specific meaning and structure of the word.
duet
See the related link for a list with OVER 1,500 words starting with the prefix IN.
Yes, spec is a prefix. See the related question for a list of words beginning with this prefix.
Bio- means life......and some words areBiologyBiographyBio hazard
PostcardPostofficepostponepostplanposthumouspostmarkpostagepostscriptpostdate
periphery periscope perimeter
complete,complain,computer,
nonsense
Nontoxic....am I doing homework for you??!!