Freak

omituinen

(strange, weird)

outo

(strange, weird)

friikki

(oddball, especially in physiology)

friikki

(person who has an obsession or extreme knowledge of something)

friikki

(very sexually perverse individual (friendly use))

intoilija

(person who has an obsession or extreme knowledge of something)

kummajainen

(oddball, especially in physiology)

luonnonoikku

(oddball, especially in physiology)

oikku

(sudden causeless change or turn of the mind)

päähänpisto

(sudden causeless change or turn of the mind)