opportunist

[ op-er-too-nist, -tyoo- ]
/ ˌɒp ərˈtu nɪst, -ˈtyu- /

noun

a person who practices opportunism, or the policy of adapting actions, decisions, etc., to effectiveness regardless of the sacrifice of ethical principles: He is an extreme opportunist and always thinks the ends justify the means.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for opportunist

British Dictionary definitions for opportunist

opportunist

/ (ˌɒpəˈtjuːnɪst) /

noun

a person who adapts his actions, responses, etc, to take advantage of opportunities, circumstances, etc

adjective

taking advantage of opportunities and circumstances in this way
Derived Formsopportunism, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for opportunist

opportunist


n.

1881, from opportunism (q.v.) + -ist. A word in Italian politics, later applied in French by Rochefort to Gambetta (1876) and then generally in English to any who seek to profit from the prevailing circumstances.

Online Etymology Dictionary, © 2010 Douglas Harper