1 adjective detailed, in-depthcuimsitheach adj1 c m ucríochnúil adj2 c m uhe has a thorough understanding of ittá eolas cuimsitheach aige aira thorough cleaning is neededtá glanadh ceart ag teastáil2 adjective of personcríochnúil adj2 c m udúthrachtach adj1 c m ushe's very thorough in her worktá sí an-chríochnúil i mbun a cuid oibre3 adjective emphasising bad qualityamach is amach c m uhe made a thorough mess of itrinne sé praiseach cheart chríochnaithe de