To knowingly say that something is smaller or less important than it actually is, especially as a way of showing contempt or deprecation.
To reduce in complexity, or remove unnecessary parts; to dumb down.
to reduce the official estimate of a storm's intensity.
To place lower in position.
To revert software back to an older version.
To disparage.
A reduction of a rating, as a financial or credit rating.
A downhill gradient on a road or railway.