1. rankness(n = noun.attribute) fertility, prolificacy, richness - the property of producing abundantly and sustaining vigorous and luxuriant growth; "he praised the richness of the soil"; "weeds lovely in their rankness"
is a kind of fecundity, fruitfulness
Derived forms adjective rank5, adjective rank1
2. rankness(n = noun.attribute) fetidness, foulness, malodorousness, stinkiness - the attribute of having a strong offensive smell;
is a kind of aroma, odor, odour, olfactory property, scent, smell
has particulars: b.o., body odor, body odour
Derived form adjective rank2
The condition or quality of being rank. [1913 Webster]