mistreat, maltreat, abuse, ill-use, step, ill-treat -- (treat badly; "This boss abuses his workers"; "She is always stepping on others to get ahead")
Overview of adj ill-used
The adj ill-used has 1 sense
exploited, ill-used, put-upon, used, victimized, victimised -- (of persons; taken advantage of; "after going out of his way to help his friend get the job he felt not appreciated but used")