1 adjective giving physical sustenancecothaitheach adj1 c m utathagach adj1 c m uhave a good, sustaining meal before the long journeyith béile breá cothaitheach roimh an turas fada, déan do chuid go substainteach roimh an aistear fada2 adjective giving emotional sustenancesásúil adj2 c m udearfach adj1 c m utairbheach adj1 c m ushe finds this type of writing very sustainingtá an cineál seo scríbhneoireachta an-sásúil aici, baineann sí an-sásamh as an saghas seo scríbhneoireachtahe had a very sustaining influence on his studentsbhí tionchar iontach dearfach aige ar a chuid mac léinn