importune

As verbs the difference between bother and importune

is that bother is to annoy, to disturb, to irritate while importune is to bother, trouble, irritate.

As a noun bother

is fuss, ado.

As a interjection bother

is a mild expression of annoyance.

As a adjective importune is

(obsolete) grievous, severe, exacting.

As verbs the difference between importune and entreat

is that importune is to bother, trouble, irritate while entreat is to treat, or conduct toward; to deal with; to use.

As a adjective importune

is (obsolete) grievous, severe, exacting.

As a noun entreat is

(entreaty).