HUMANIZE is a 8 letter word that starts with H.

1. \Hu"man*ize\, v. i.
   To become or be made more humane; to become civilized; to be
   ameliorated.
   
         By the original law of nations, war and extirpation
         were the punishment of injury. Humanizing by degrees,
         it admitted slavery instead of death; a further step
         was the exchange of prisoners instead of slavery.
                                                  --Franklin.
   
   

2. \Hu"man*ize\, v. t. [imp. & p. p. {Humanized}; p. pr. &
   vb. n. {Humanizing}.] [Cf. F. humaniser.]
   1. To render human or humane; to soften; to make gentle by
      overcoming cruel dispositions and rude habits; to refine
      or civilize.
   
            Was it the business of magic to humanize our natures
            with compassion?                      --Addison.
   
   2. To give a human character or expression to. ``Humanized
      divinities.'' --Caird.
   
   3. (Med.) To convert into something human or belonging to
      man; as, to humanize vaccine lymph.