concentration Synonyms

absorption assiduousness denseness compactness engrossment tightness assiduity density immersion narrowing niggardness solidification nucleolus poignancy snowdrift pondering settledness pooling pooler self-examination preoccupancy preoccupation reduction sedulity rumination musing intenseness intensification intensity intentiveness intentness interpenetration introspection isthmus loadstar loudness lucubration major mass massing meditation merger mind inspissation solidity specialism attention span mindfulness applet paperhanging