infective
1. [ adjective ] able to cause disease
Synonyms: pathogenic morbific
Examples:

"infective agents" "pathogenic bacteria"

Related terms: unhealthful
2. [ adjective ] caused by infection or capable of causing infection; viruses and other infective agents"
Synonyms: infectious
Examples:

"a carrier remains infective without himself showing signs of the disease"

Related terms: septic
Similar spelling:   ineffective
  invective
  infect
  infected
  infection
  infectious
  in_fact
  invested
  infested
  infectiously
  invest
  infest
  investment
  in_effect
  invasive
  ineffectual