required, obligatory
http://thesaurus.reference.com/browse/necessary use these word at this website and it will help you
Another word for obligatory is "required" or "necessary".
Another word for doesn't help is does not help.
Another word for help is aid.
imperative crucial
Unnecessary
Necessary or desired
Other words for require:demandrequest
Necessary.
Another word would be Help
Another word for matriculated is university. I hope this answer will help you !
Another word for larynx is the voice box. Hope I help.