1. In a grave and sober manner
   - soberly, staidly 
2. To a severe or serious degree
   "is gravely ill"
   - badly, severely, seriously, critically

See also: grave

• Phylloporus boletinoides
• phylloquinone
• Phyllorhynchus
• Phylloscopus
• Phylloscopus sibilatrix
• Phyllostachys
• Phyllostachys aurea
• Phyllostachys bambusoides
• Phyllostachys nigra
• Phyllostomatidae
• Phyllostomidae
• Phyllostomus
• Phyllostomus hastatus
• phyllotaxis
• Phylloxera
• Phylloxera vitifoleae
• Phylloxeridae
• phylogenesis
• phylogenetic
• phylogenetic relation
• phylogenetically
• phylogeny
• phylum
• phylum Acanthocephala
• phylum Annelida