Rank

1. Strong of its kind or in character; unmitigated; virulent; thorough; utter (used of negative things).
2. Strong in growth; growing with vigour or rapidity, hence, coarse or gross. quotations ▼

rank grass

rank weeds

3. Suffering from overgrowth or hypertrophy; plethoric. quotations ▼
4. Causing strong growth; producing luxuriantly; rich and fertile. quotations ▼

rank land

5. Strong to the senses; offensive; noisome.
6. Having a very strong and bad taste or odor. quotations ▼synonyms ▲Synonyms: stinky, smelly, (UK) pongy

Your gym clothes are rank, bro – when'd you last wash 'em?

7. Complete, used as an intensifier (usually negative, referring to incompetence). quotations ▼synonyms ▲Synonyms: complete, utter

I am a rank amateur as a wordsmith.

8. (informal) Gross, disgusting.
9. (obsolete) Strong; powerful; capable of acting or being used with great effect; energetic; vigorous; headstrong.
10. (obsolete) lustful; lascivious