importunacy

As nouns the difference between importancy and importunacy

is that importancy is (obsolete) importance; significance while importunacy is the quality of being importunate.

As nouns the difference between terms and importunacy

is that terms is while importunacy is the quality of being importunate.

As nouns the difference between importunity and importunacy

is that importunity is unseasonableness; an unsuitable or inappropriate time while importunacy is the quality of being importunate.

As an adjective importunate

is of a demand: persistent or pressing, often annoyingly so.

As a verb importunate

is (rare) to importune, or to obtain by importunity.

As a noun importunacy is

the quality of being importunate.