struck someone when they were down

Attacked the fallen

To strike someone when they were down is to attack or criticize a person already suffering or disadvantaged.

The image is of kicking someone who has fallen: After he lost his job, his ex-wife struck him when he was down by filing for full custody.

The phrase emphasizes the cruelty of exploiting vulnerability rather than showing mercy.

Related

adding insult to injury · twisting the knife · battery · assault · injustice · unfairness · shaming · betrayal · cruelty · cheap shot · sucker punch · dishonor · exploitation · taking advantage · immorality · piling on · malice · mean spirited

Opposites
ethical conduct in conflict

struck someone when they were downheld back

Kept from advancing

Family

struck, strikingly, striker, strikers, someone

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Negative · Everyday, not technical · Rated PG