1. adjective essential2. adjective (of person) full of life, energy3. adjective (of thing, action) lively, energetic1 adjective essentialríthábhachtach adj1 c m ubunriachtanach adj1 c m ushe plays a vital roletá ról ríthábhachtach aicithe funding is of vital importancetá an maoiniú thar a bheith tábhachtachcare is vital on the roadtá sé ríthábhachtach a bheith aireach ar an mbótharit's vital that they drink enough watertá sé fíorthábhachtach go n-ólfaidís go leor uiscea vital errormeancóg chinniúnach2 adjective (of person) full of life, energybríomhar adj1 c m ufuinniúil adj2 c m u