defective virus one that cannot be completely replicated or cannot form a protein coat; in some cases replication can proceed if missing gene functions are supplied by other viruses; see also helper virus.
subjugate - put down by force or intimidation; The government quashes any attempt of an uprising; China keeps down her dissidents very efficiently; The rich landowners subjugated the peasants working the land
To subdue is defined as to gain control over someone or something or to calm or quiet someone or something. An example of subdue is when you manage to calm angry protestors and gain control over the situation. transitive verb.