floccinaucinihilipilification

n. habit or action of judging or estimating something as worthless or having no value

Floccinaucinihilipilification Dictionary.com (American English: ) (or variously floccipaucinihilipilification) is "the act or habit of estimating or describing something as worthless, or making something to be worthless by deprecation".With 29 letters, it is the longest non-technical word in the first edition of the Oxford English Dictionary (OED), which presents it as "enumerated in a well-known rule from the Eton Latin Grammar". The OED dates its first use in literature at 1741 in William Shenstone's Works in Prose and Verse: "I loved him for nothing so much as his flocci-nauci-nihili-pili-fication of money".
See more at Wikipedia.org...

The categorizing of something that is useless or trivial