1 noun ceasing to be present, active, visible, etcimeacht as amharcdul as radharc c m uits disappearance went unnoticedníor thug duine ar bith faoi deara gur imigh séafter the disappearance of the moonnuair a d'imigh an ghealach as radharc2 noun ceasing to exist, occurthis resulted in the complete disappearance of the rashd'imigh an gríos ar fad dá thoradh seothey fear the disappearance of small farmstá eagla orthu go rachaidh feirmeacha beaga i léig, tá eagla orthu go dtiocfaidh deireadh le feirmeacha beaga3 noun of sth/sb lost or takenprior to the disappearance of the ringsular cailleadh an fáinne, sula ndeachaigh an fáinne ar iarraidhthey're investigating the disappearance of her husbandtá siad ag fiosrú conas a chuaigh a fear céile ar iarraidhan inquiry into disappearancesfiosrúchán faoi dhaoine atá ar iarraidh