propensity
1. [ noun ] a natural inclination
Synonyms: leaning proclivity
Examples:

"he has a proclivity for exaggeration"

Related terms: inclination
2. [ noun ] an inclination to do something
Synonyms: tendency leaning
Examples:

"he felt leanings toward frivolity"

Related terms: inclination tend
3. [ noun ] a disposition to behave in a certain way
Synonyms: aptness
Examples:

"the aptness of iron to rust" "the propensity of disease to spread"

Related terms: disposition
Similar spelling:   propinquity
  prevenient
  propene
  prevent
  propenal
  Proventil
  Provencio
  proponent
  propenoate
  preventive
  prevention