Below are possible answers for the crossword clue Obsessive enthusiast.
FANATIC
a person motivated by irrational enthusiasm (as for a cause); "A fanatic is one who can't change his mind and won't change the subject"--Winston Churchill
marked by excessive enthusiasm for and intense devotion to a cause or idea; "rabid isolationist"
MANIAC
wildly disordered; "a maniacal frenzy"
an insane person
a person who has an obsession with or excessive enthusiasm for something
NUT
usually large hard-shelled seed
half the width of an em
gather nuts
a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt
one of the two male reproductive glands that produce spermatozoa and secrete androgens; "she kicked him in the balls and got away"
Egyptian goddess of the sky
someone who is so ardently devoted to something that it resembles an addiction; "a golf addict"; "a car nut"; "a bodybuilding freak"; "a news junkie"
a whimsically eccentric person
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