downcast

Short definition from Wiktionary

Adjective

1. 1
   Of the eyes, a facial expression, etc.: looking downwards, usually as a sign of discouragement, sadness, etc., or sometimes modesty.
2. 2
   Of a person or thing: cast or thrown to the ground.
3. 3
   Of a thing: directed downwards.
4. 4
   Of a person: feeling despondent or discouraged.
5. 5
   Of a person or thing: defeated, overthrown; also, destroyed, ruined.

Noun

1. 1
   Synonym of downthrow (“a depression of the strata on one side of a fault; also, the degree of downward displacement in such a fault”).
2. 2
   An act of looking downwards, usually as a sign of discouragement, sadness, etc., or sometimes modesty; hence (uncountable, archaic), dejection, melancholy.
3. 3
   An act, or the situation, of being cast or thrown to the ground.
4. 4
   A defeat, an overthrow; also, an act of destruction or ruin.
5. 5
   A cast (“change of expression of a data type”) from supertype to subtype.
6. 6
   A ventilating shaft down which air passes in circulating through a mine.

Verb

1. 1
   To turn (the eyes) downwards, usually as a sign of discouragement, sadness, etc., or sometimes modesty.
2. 2
   To cast or throw (something) downwards; also, to drop or lower (something).
3. 3
   To demolish or tear down (a building, etc.).
4. 4
   To make (someone) feel despondent or discouraged; to discourage, to sadden.
5. 5
   To cast (“change the expression of”) (a data type) from supertype to subtype.
6. 6
   To reproach or upbraid (someone); also, to taunt (someone).
7. 7
   To depose or overthrow (a leader, an institution, etc.); also (sometimes reflexive), to bring down (oneself or someone) from an exalted position; to humble.