This question looks like a mirror of a question I asked hours ago,
A TOEFL textbook gives me this verb, saying
"Their synonyms" are "stoop, design" ( according to a text )
According to Merriam Unabridged Online,
Yes, 2 would be used "according to a text" in common, if I guess.
But the definition of 3,
To assume an air of superiority ( as to one inferior or less fortunate )
Does it comes from, "lower oneself in social rank or designation etc, or descend from the status quo to the lower ( inferior ) rank so that the person looks to assume an air of superiority?
I have never been quizzed by a dictionary so much today :)