Synonyms for Expedient (same or very similar meaning)
WordNet sense 1 (marked by artful prudence, expedience, and shrewdness):
politic
WordNet sense 2 (taking immediate advantage, often unethically, of any circumstance of possible benefit):
opportunist, timeserving
WordNet sense 3 (appropriate for achieving a particular end; implies a lack of concern for fairness):
advantageous
From the ODE community, based on WordNet
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