adjectiveaidiacht1 usually pejorativedíspeagúilpersonthey're being opportunistictá siad ag breith ar an bhfaill, tá siad ag teacht i dtír ar chúrsaíopportunistic entrepreneursfiontraithe a thapaíonn a ndeis2unscheduledgan choinnecmuthey had opportunistic meetings with teachersbhí cruinnithe gan choinne acu le múinteoirí3unpremeditatedit was an opportunistic theftgadaíocht nach raibh réamhbheartaithe a bhí ann, gadaíocht ar ala na huaire a bhí annan opportunistic fraudstercaimiléir faille4biochemistybithcheimic, medicineleigheasinfection etcfaillegs as adjcmuopportunistic infectionionfhabhtú faille5biologybitheolaíocht, zoologyzó-eolaíochtfeeder etcfaillegs as adjcmuan opportunistic huntersealgaire faille