dis- + card

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DISCARD, CAST, SHED, SLOUGH, SCRAP, JUNK mean to get rid of.

DISCARD implies the letting go or throwing away of something that has become useless or superfluous though often not intrinsically valueless.

e.g. discard old clothes

CAST, especially when used with off, away, or out, implies a forceful rejection or repudiation.

e.g. cast off her friends

SHED and SLOUGH imply a throwing off of something both useless and encumbering and often suggest a consequent renewal of vitality or luster.

e.g. shed a bad habit finally sloughed off the depression

SCRAP and JUNK imply throwing away or breaking up as worthless in existent form.

e.g. scrap all the old ways would junk our educational system

verb |diˈskärd| with object

get rid of (someone or something) as no longer useful or desirable:

〈人が〉〈不用品など〉を処分する, 廃棄する(throw away); 〈考え･習慣･友人など〉を捨てる, 見捨てる, 放棄する; 〈服〉を脱ぎ捨てる

e.g. Hilary bundled up the clothes she had discarded.

(in bridge, whist, and similar card games) play (a card that is neither of the suit led nor a trump), when one is unable to follow suit.

〘トランプ〙 〈不要なカード〉を捨てる

noun |ˈdisˌkärd|

a person or thing rejected as no longer useful or desirable.

捨てられた物［人］

(in bridge, whist, and similar card games) a card played which is neither of the suit led nor a trump, when one is unable to follow suit.

〘トランプ〙 捨て札

discardable |disˈkärdəbəl| adjective

late 16th century (originally in the sense ‘reject (a playing card’)): from dis- (expressing removal) + the noun card1.