1. Proceeding from natural feeling or impulse without external stimulus
   - impulsive

See also: self-generated, spontaneous

• hypothalamus
• hypothec
• hypothecate
• hypothecation
• hypothermia
• hypothermic
• hypothesis
• hypothesise
• hypothesize
• hypothetic
• hypothetical
• hypothetical creature
• hypothetical imperative
• hypothetically
• hypothrombinemia
• hypothyroidism
• hypotonia
• hypotonic
• hypotonicity
• hypotonus
• hypovitaminosis
• hypovolaemia
• hypovolaemic
• hypovolemia
• hypovolemic