Hallow (verb)
To make holy; (adj) holy
Halcyon (adj)
Calm, pleasant
Harbinger (noun)
An omen or sign
Hector (verb)
To bully; to pester
Hedonism (noun)
pursuit of pleasure, especially of the senses
Hegira (noun)
Flight, escape
Hiatus (noun)
a pause or gap
Hoi polloi (noun)
common people; the masses
Hubris (noun)
excessive pride or self-confidence
Idiosyncrasy (noun)
a peculiar personality trait