If you feel that something isn't worthy of your consideration, you may disdain it (or treat it with disdain).

In Old French, deignier meant "to treat something as worthy." To disdain something, then, is to treat it with contempt: "Management at [the company] displayed a certain disdain for safety and appeared to regard safety-conscious workers as wimps in the organization." As a verb, disdain carries an air of self-righteousness not associated with similar words like despise, abhor, detest, loathe and scorn. So if you disdain something, you might reject it with a haughty scoff, "Ha!"

Definitions of disdain

n lack of respect accompanied by a feeling of intense dislike

contempt, despite, scorn
Type of:
a feeling of aversion or antipathy

n a communication that indicates lack of respect by patronizing the recipient

condescension, patronage
Type of:
depreciation, derogation, disparagement
a communication that belittles somebody or something

v look down on with disdain

contemn, despise, scorn
look down on
regard with contempt
Type of:
detest, hate
dislike intensely; feel antipathy or aversion towards

v reject with contempt

freeze off, pooh-pooh, reject, scorn, spurn, turn down
decline, pass up, refuse, reject, turn down
refuse to accept
refuse, reject, turn away, turn down
refuse entrance or membership
rebuff, repel, snub
reject outright and bluntly
Type of:
decline, refuse
show unwillingness towards