Synonyms for «serious matter»

significant heavy grave severe deep real huge great big weighty important health hard urgent critical medical legal financial strong weight public negative profound major considerable mental security title water behavior whole grievous economic full car utmost climate high extreme formal intense committed criminal hot complicated behavioral technical absolute personal

thing subject issues stuff problems concern seriousness importance amount condition nature life impact trouble deal situation money attention consequences threat conversation look action thinking consideration manner shit interest topics case time work challenge effects questions damage face danger changes need way person injury significance respect relations relationship bit business