Deprecative in a sentence as an adjective

It pained me to see noobs being depressed and self-deprecative on the irc channel.

"People use it when they're busy, drunk, or absent-minded to be self-deprecative.

Maybe it's just me, but the "prepositional because" is usually deprecative of the subject.

Deprecative definitions

adjective

tending to diminish or disparage; "belittling comments"; "managed a deprecating smile at the compliment"; "deprecatory remarks about the book"; "a slighting remark"

See also: belittling deprecating deprecatory depreciative depreciatory slighting

adjective

given to expressing disapproval