immunosuppress
/ˌɪmjʊnəʊsəˈprɛs/ /ɪˌmjuːnəʊsəˈprɛs/Medicine and Biology
verb
[with object] To cause immunosuppression of (an organism).
Origin
1960s; earliest use found in The Lancet. From immuno- + suppress, after immunosuppression. Compare slightly earlier immunosuppressed.