grievous 3adjectivedomain: all adjPrinceton WordNet [ver.3.1]EnglishDefinitionof great gravity or crucial import; requiring serious thoughtReport errorPath to highest hypernymMorphologySynset graphExamples1.heavy matters of state2.a grievous fault3.faced a grave decision in a time of crisis4.grave responsibilities5.the weighty matters to be discussed at the peace conferenceSynonymsgrave 3heavy 17weighty 3