hideousness
hiding
hierarchic
hierarchy
hieroglyph
hieroglyphic
hieroglyphical
hieroglyphics
hi-fi
higgledy-piggledy
  high
high-beam
highborn
highboy
highbrow
high-class
high-flown
high-frequency
high-handed
high-hat
high-jack

    high school graduate

     graduado, diplomado (high school - man)

     graduada (high school - woman)