pun·gent 
(pŭnjənt)
(pŭnjənt)adj.
1. Affecting the organs of taste or smell with a sharp acrid sensation.
2.
a. Penetrating, biting, or caustic: pungent satire.
b. To the point; sharp: pungent talks during which the major issues were confronted.
3. Pointed: a pungent leaf.
[Latin pungēns, pungent-, present participle of pungere, to sting; see peuk- in the Appendix of Indo-European roots.]
pungen·cy n.
pungent·ly adv.