rank 2 
(răngk)
(răngk)adj. rank·er, rank·est
1. Growing profusely or with excessive vigor: rank vegetation.
2. Yielding a profuse, often excessive crop; highly fertile: rank earth.
3. Strong and offensive in odor or flavor: rank gym clothes.
4. Absolute; complete: a rank amateur; rank treachery. See Synonyms at flagrant.
[Middle English ranc, from Old English, strong, overbearing; see reg- in the Appendix of Indo-European roots.]
rankly adv.
rankness n.