1 noun neglected statethere's a lot of dereliction in the towntá go leor foirgnimh thréigthe sa bhailethe building was facing derelictionbhí an foirgneamh i mbaol titim as a chéile2 noun neglect of dutyfaillí fem4 c m uneamart masc1 c m usiléig fem2 c m uhe was accused of dereliction of dutycuireadh ina leith go ndearna sé faillí ina dhualgas