GRAVE, GRAVELY (solemn)
ADJECTIVES
• CHARGEFUL † full of responsibility; responsible, grave …1553
• DEEP † solemn, grave …a1000
• IMPORTUNATE † burdensome; grievous, grave …c1540
• MURE grave, modest, demure … c1390 obs. exc. Eng. dial.
• VULTUOSOUS † of a grave and solemn countenance; of a heavy and sad look …1656
ADVERBS
• HEAVY † gravely, seriously …1563
• IMPORTUNATELY † gravely, exceedingly …1660
Lexicophilia 