Definition of rankest:
(adj) :
Strong in growth; growing with vigour or rapidity, hence, coarse or gross.
(adj) :
Causing strong growth; producing luxuriantly; rich and fertile.
(adj) :
Suffering from overgrowth or hypertrophy; plethoric.
(adj) :
Strong to the senses; offensive; noisome.
(adj) :
(informal) Gross, disgusting, foul.
(adj) :
(horse racing) Headstrong; difficult to control.