1 adjective producing desired resultéifeachtach adj1 c m uwe haven't found an effective solution yetníl réiteach éifeachtach faighte fós againnhe's very effective as an administratortá sé an-éifeachtach mar riarthóir2 adjective of contract, agreement, etci bhfeidhmthe contract is effective from Mondaybeidh an conradh i bhfeidhm ón Luan3 adjective FIN of rate, value, etciarbhír gs as adj c m uglan adj1 c m ueffective exposureneamhchosaint iarbhíreffective tax rateráta cánach iarbhír, ráta cánach glan4 adjective real, actuali ndáiríre c m ule fírinne c m ushe was the effective leaderba í an ceannaire i ndáirírethey're already in effective controltá ceannas, le fírinne, acu cheana féin