verbbriathar1of cause, basistransitiveaistreachbheith mar bhunús lethe principles that underlie the policyna prionsabail is bonn leis an bpolasaí, na prionsabail ar a bhfuil an polasaí bunaithe2rock, soil etctransitiveaistreachthe rock underlying the roadan charraig atá faoi bhun an bhóthair, an charraig atá faoin mbóthar