"contemptuous, scornful, haughty," 1540s, from disdain (n.) + -ful. Earlier was disdainous (late 14c.). Sometimes in early Modern English shortened to sdainful. Related: Disdainfully; disdainfulness.
some economists are disdainful of their colleagues in other social disciplines
discursive
discus
discuss
discussion
disdain
disdainful
disease
diseased
disembark
disembodied
disembody