Crossword Clue:

one who studies biosystematics

Answer	Crossword Clue
OCULIST	One who studies irises
YOGI	One who studies asanas and pranayama
HARRYPOTTER	Fictional wizard who studies at Hogwarts

OWER	One who charges
HEEDER	One who minds
PINER	One who yearns
ESSAYER	One who tries
TASTER	One who sips
YOGI	One who meditates
HAWER	One who hesitates
ALUM	One who reunes

GIVER	One who tithes
FREELOADER	One who mooches
JEERER	One who hoots
CENTER	One who snaps
EPICURE	One who discriminates?
CAT	One who litters
HEIR	One who succeeds
KEENER	One who wails

MOM	One who delivers
EELER	One who sniggles
STOOLIE	One who sings
BIGMOUTH	One who blabs
CANARY	One who sings
ATTENDEE	One who shows
RAT	One who blabs
JUDGE	One who tries

ADMAN	One who pitches
STOWAWAY	One who goes free?
SOPRANO	One who gets high?
ARBITER	One who makes calls
OUT	Like one who fans
TUNER	One who pulls strings
AIDE	One who takes messages
SOLOARTIST	One who plays alone

XER	One who crosses out
REF	One who cries foul?
LIVESALIE	Hides who one is
NARC	One who monitors traffic
MATADOR	One who accepts charges