- halfpennyworth
- herbaceous plant
- herb
- habilitate
- habiliments
- habit_forming
- habit
- habitable
- habitant
- habitual criminal
- habsburg
- hackberry
- hacking sound of cough
- hackles
- hackmore
- hackney
- hackney coach
- hackneyed
- had best
- hacksaw
- had crime
- haddock
- hadean time
- hades
- hadj
- hadrian's wall
- hadrosaur
- hadrosauridae
- haemagglutinate
- haemagglutination
- haem
- haemangioma
- haemanthus coccineus
- haematal
- haematemesis
- haematic
- haematinic
- haematite
- haematobia irritans
- haematocele
- haematochezia
- haematocoele
- haematocolpometra
- haematocytopenia
- haematocyturia
- haematohiston
- haematoidin
- haematological
- haematologist
- haematolysis