have someone's back

Defend a friend

To have someone's back is to support or protect them, especially in difficult situations.

The image is of guarding the vulnerable area a person can't see: Don't worry, I've got your back.

It implies loyalty and readiness to defend: She always has my back when things get tough.

Related

reliable · assist · steadfast · protect · safeguard · trustworthy · committed · aid · devoted · ally · uphold · stand by · in your corner · lean on · allegiance · partner · band of brothers · collaborate

Opposites
loyalty and support

have someone's backabandon

Leave behind permanently

leave someone high and dry · turn one's back on · desert · forsake · throw under the bus

trustworthiness in conflict

have someone's backbackstab

Betray someone's trust

betray · stab in the back · double-cross · sell out · undermine

Family

have, having, haves, someone, somebody, back, backed, backing, backer

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