Found 2 items, similar to opportunistic.
English → English (WordNet) Definition: opportunistic opportunistic adj : taking immediate advantage, often unethically, of any circumstance of possible benefit [syn: opportunist, timeserving]
English → English (gcide) Definition: opportunistic opportunistic \opportunistic\ adj. 1. taking immediate advantage, often unethically, of any circumstance of possible benefit; practising opportunism. [WordNet sense 1] Syn: opportunist, timeserving. [WordNet 1.5] 2. (Med.) Causing disease only when the immune system of the host has been weakened, or other damage to the host provides special opportunity for invasion; -- of microorganisms or infectious diseases; as, opportunistic pathogens may infect a burn site; AIDS predisposes a patient to opportunistic infection. [PJC]