Search Result for "opportunistic": 
Wordnet 3.0

ADJECTIVE (1)

1. taking immediate advantage, often unethically, of any circumstance of possible benefit;
[syn: opportunist, opportunistic, timeserving]


The Collaborative International Dictionary of English v.0.48:

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]
WordNet (r) 3.0 (2006):

opportunistic adj 1: taking immediate advantage, often unethically, of any circumstance of possible benefit [syn: opportunist, opportunistic, timeserving]