cast aside

discarded

/dɪsˈkɑːd/
to get rid of sth that you no longer want or need 丢弃；抛弃
~ sb/sth
The room was littered with discarded newspapers.

He had discarded his jacket because of the heat.

figurative
She could now discard all thought of promotion.

~ sb/sth as sth
10% of the data was discarded as unreliable.

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Sweden needs to cast aside outdated policies and thinking…

The Princess was cruelly cast aside when she failed to produce an heir…

Now that Fantina is old, she has been cast aside like some useless object.