Nonpathogenic

adj. calm, resilient professional

What it means

Not capable of causing disease.

Reach for it when describing an organism or strain not known to cause disease in a specified host

The laboratory strain is nonpathogenic and safe for classroom study.

Words to choose between 6

By register, from playful at the top to literary at the bottom. Tap a word to see when it fits.
everyday
warm
professional
formal
  • everyday

    harmless

    Fits when plain reassurance is justified for the stated context

    Careful Harmless is broader and more absolute.

  • everyday

    non-disease-causing

    Fits when transparent wording aids nontechnical readers

    Careful The phrase needs the host population specified.

  • warm

    safe strain

    Fits when practical classroom or production use is supported

    Careful Safety includes more than pathogenicity.

  • professional

    avirulent

    Fits when a strain lacks disease-producing virulence

    Careful Avirulent organisms can still pose risks in unusual hosts.

  • professional

    commensal

    Fits when an organism lives with a host without ordinarily harming it

    Careful A commensal can become opportunistic.

  • formal

    benign

    Fits when the organism's effect is not damaging

    Careful Benign is less precise in microbiology.

Opposites 3

  • pathogenic
  • virulent
  • disease-causing

Common phrases 3

  • nonpathogenic strain

    The class worked only with a documented nonpathogenic strain.

  • nonpathogenic organism

    A nonpathogenic organism can still require careful containment.

  • normally nonpathogenic

    The bacterium is normally nonpathogenic in healthy adults.

Usage notes

Keep in mind

Pathogenicity depends on strain, host, dose, and route; nonpathogenic never means risk-free in every setting.

Definitions and examples are written for this site. How words are chosen Updated