1. Extremely
   "infernally clever"
   - hellishly

See also: infernal

• Hypoxidaceae
• Hypoxis
• Hypoxis hirsuta
• hypozeugma
• hypozeuxis
• Hypsiglena
• Hypsiglena torquata
• Hypsiprymnodon
• Hypsiprymnodon moschatus
• hypsography
• hypsometer
• hypsometry
• Hyracoidea
• Hyracotherium
• hyrax
• hyson
• hyssop
• hyssop loosestrife
• hyssop oil
• Hyssopus
• Hyssopus officinalis
• hysterectomy
• hysteresis
• hysteretic
• hysteria