opportunist
noun [ C ]
disapproving uk/ˌɒpəˈtjuːnɪst/ us/ˌɒpərˈtuːnɪst/someone who tries to get power or an advantage in every situation:
He was portrayed as a ruthless opportunist.
opportunist
adjective
disapproving uk/ˌɒpəˈtjuːnɪst/ us/ˌɒpərˈtuːnɪst/ (also opportunistic)using a situation to get power or an advantage:
The airline is concerned about the possibility of opportunistic strikes by staff.