To weaken.
To reduce the amplitude of an electrical, radio, or optical signal.
To reduce in size, force, value, amount, or degree.
To become thin or fine; to grow less.
To rarefy.
(of a beer) To become less dense as a result of the conversion of sugar to alcohol.
To reduce the virulence of a bacterium or virus.
To make thinner, as by physically reshaping, starving, or decaying.
Gradually tapering into a petiole-like extension toward the base.
To become weaker or worse.
To choose not to do something; refuse, forbear, refrain.
To run through from first to last; to recite in order as though declining a noun.
To cause to decrease or diminish.
To bend downward; to bring down; to depress; to cause to bend, or fall.
To turn or bend aside; to deviate; to stray; to withdraw.
To move downwards, to fall, to drop.
To inflect for case, number, gender, and the like.
To reject a penalty against the opposing team, usually because the result of accepting it would benefit the non-penalized team less than the preceding play.
To recite all the different declined forms of (a word).
A weakening.
Downward movement, fall.
A reduction or diminution of activity.
The act of declining or refusing something.
A sloping downward, e.g. of a hill or road.