opening the floodgates

Removing all barriers

Opening the floodgates means removing a barrier that had been holding something back, allowing a sudden overwhelming flow.

The phrase derives from literal floodgates that control water in dams and canals, but it's used almost entirely in figurative contexts.

When someone opens the floodgates, they trigger an uncontrollable surge—of emotions, complaints, lawsuits, immigration, or anything else that might come in torrents.

The court ruling opened the floodgates to similar claims.

The implication is usually cautionary: once opened, floodgates are hard to close again.

Related

release · cascade · surge · domino effect · ripple effect · chain reaction · trigger · catalyze · instigate · slippery slope · escalation · liberate · proliferation · point of no return · let loose · outpouring · set free · catharsis

Opposites
flow control

opening the floodgatesstemming the tide

Stopping a powerful advance

blocking · holding back · sealing off · containing · bottling up

degree of release

opening the floodgatescontrolled release

Gradual substance dispensing mechanism

trickling · rationing · doling out · parceling out · slow roll

initiation vs. prevention

opening the floodgatesdrawing the line

Setting a firm boundary

heading off

Family

opening, opened, opens, opener, openers, openly, openness, reopen, reopened

Familiarity
Top 100,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G