- Heliconian
- Heliotrope
- Helium
- Hellcat
- Help
- Hilly
- Helpful
- Helpfully
- Helping hand
- Helplessly
- Hematopoietic stem cell
- Hemistich
- Hempy
- Hen
- Hen-party
- Hence forward
- Henchmen
- Hennaed
- Henotheism
- Henpecked
- Hepatic
- Hepatitis
- Hepatology
- Heptagon
- Her royal highness
- Herald
- Heraldic
- Herb roots
- Herb cyperus
- Herbaceous
- Herbalist
- Herbcacatia rotundifolia
- Herd immunity
- Herd of cows
- Herder
- Herdsman
- Hereabout
- Hereabouts
- Herein
- Heretofore
- Hereunder
- Heroics
- Heroism
- Herpangina
- Herring gull
- Hers
- Hesitancy
- Hesitate
- Hesitating
- Hesper
- Hesperus
- Heterosexual
- Hexapod
- Hexer
- Hey
- Hiccup
- Hickory
- Hidden
- Hide
- Hideously
- Hideout
- Hierodule
- Hieroglyph
- Hieromania
- High
- High church
- High day
- High dignity
- High fever
- High jinks
- High level
- High pedestal
- High quarters
- High ranking
- High seas
- High season
- High spot
- High table
- High technology
- High tide
- High time
- High treason
- High wide and handsome
- High-birth
- High-class
- High-heeled
- High-jump
- High-pressure
- High-words
- Highbrow
- Higher
- Higher-ups
- Highfalutin
- Highjack
- Highly stringed
- Highness
- Hike
- Hill
- Hill man
- Hill produce