1.  super oversupervise, superb, superior Latin  symtogethersymbol, symmetryGreek  syn togethersynthetic, synopsis, syntaxGreek  trithreetricycle, triceps, triadGreek  unnotunfit, unequal, undoneOld English  archygovernmentmonarchy, hierarchyGreek  ardalwaysdrunkard, coward, dullardGermanic  cidekillhomicide, suicideLatin  icianspecialistmusician, physicianLatin  itisinflammationarthritis, tonsillitisGreek

2.  The talkative fool made several superfluous comments.  The symbiotic species could not survive without each other.  Please synchronize your watches at this time.  Rome was sometimes ruled by a triumvirate.  Unearned income must be reported to the IRS.

3.  England is, or once was, ruled by a monarchy.  The dullard was always boring everyone to tears.  In killing his father, Oedipus was guilty of patricide.  Mustafa is an electronic technician.  The dermatitis on his skin was painful and unpleasant.

4. Is a superfluous comment unnecessary? Is a dullard a person who is dull company? Is a king an anarchist?

5.  Yes, it is an over flow.  Yes, a dullard is always dull.  No, a king is a monarch. An anarchist believes in no government.