propensity for/to


Senior Member
Hi guys,

Here I've got the following sentences of whose structural usage I'm not that sure.I need your help,please.

1. This dog has a propensity for independence.

2. Josh has a propensity for having sex with hookers.

3. This drug has a propensity to cause downright disastrous effects on human insights.

Thank you. In case you find any mistakes,please correct them ;-)
  • cyberpedant

    Senior Member
    English USA, Northeast, NYC
    The first two are fine. I would prefer "This drug has a propensity for causing," but I'm not sure that your version would be considered incorrect, or even less usual. It's not a very common locution.


    Senior Member
    U.K. English
    All three look perfect to me. I don't agree with cyberpedant's comments regarding the third sentence.


    Senior Member
    United States, English
    Propensity usually refers to personal inclination. Dogs and people can be personally inclined toward something, but I don't think a drug can. I would say "This drug has a tendency to cause downright disastrous effects on human insights."