"deprive of peace, rest, or tranquility," 1520s, from dis- + quiet (v.). Related: Disquieted; disquieting. As a noun, "want of quiet, rest, or peace," 1580s.
disputation
disputatious
dispute
disqualification
disqualify
disquiet
disquietude
disquisition
disregard
disrelish
disremember