1 adjective unintentional, unplannedtimpisteach adj1 c m ua tharlaíonn de thimpistea tharlaíonn de thaismeit was an accidental injuryde thimpiste a tharla an gortú, gortú timpisteach ba ea éall changes, whether deliberate or accidentalgach athrú, cé acu d'aon ghnó nó de thaisme a dhéantar iadher drowning was accidentalgo timpisteach a bádh í, de thaisme a bádh í, de thionóisc a bádh í2 adjective occurring by chanceit was an accidental meetingis go fánach a casadh ar a chéile iad, is de thimpiste a casadh le chéile iadit's not accidental that it occurs so oftenní haon timpiste é go dtarlaíonn sé chomh minic sin
3 adjective incidental, unplannedteagmhasach adj1 c m uit's an accidental by-product of the researchis toradh teagmhasach ar an taighde é4 noun MUSseachtrán masc1