seas le, v.i. 1. Stand by, adhere to, support. ~amh le duine i nguais, to stand by s.o. in danger. Níor sheas siad le chéile, they didn’t stand together. ~amh le conradh, to abide by a contract. ~ le do ghealltanas, stand by your promise. ~ann sé lena fhocal, he is a man of his word. 2. Attend upon; be sponsor, groomsman, bridesmaid, to. An bhean a sheas leis an leanbh, the woman who stood sponsor for the child. Sheas sé liom lá mo phósta, he was best man at my wedding.