slowly chip away at something from underneath

undermine

verb|/ˌʌn.dəˈmaɪn/

To gradually weaken or damage something, often secretly or indirectly.

Examples

In a meeting

Inconsistent messaging will undermine the credibility of the entire campaign.

Over coffee

Staying up late every night undermines everything I do at the gym.

Why this word

weaken

Undermine suggests gradual, often hidden damage to foundations or credibility, while weaken is more general and doesn't imply stealth or targeting foundations

sabotage

Undermine can be subtle and unintentional, while sabotage implies deliberate destructive action

damage

Undermine specifically targets the foundation or basis of something, while damage is general harm without focus on structural integrity

Usage tip

Implies indirect or gradual damage. You undermine trust, authority, efforts, or foundations. Always negative in intent or effect.

Etymology

English under + mine — literally 'to dig tunnels under a fortification to cause it to collapse'

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