The term oppressed is an inflected form of the transitive verb oppress meaning keeping down by use of force or authority that is severe and unjust. It could mean weighing heavily on. In this sense of the term it could mean to burden either spiritually or mentally. An archaic usage of the term oppressed means to overwhelm or crush.
The noun form of the word oppressed is oppressor. Another synonym for the same is the term suppress.
The word oppress comes form the Middle English term oppressen; from the Old French oppressor, which is a back-formation from oppression; which in turn comes from the Latin oppressio, oppression-, coming from oppressus, which is the past participle of the term opprimere, meaning to press against : a break up of ob-, meaning against plus premere, meaning to press.
The noun form of the word oppressed is oppressor. Another synonym for the same is the term suppress.
The word oppress comes form the Middle English term oppressen; from the Old French oppressor, which is a back-formation from oppression; which in turn comes from the Latin oppressio, oppression-, coming from oppressus, which is the past participle of the term opprimere, meaning to press against : a break up of ob-, meaning against plus premere, meaning to press.