open the floodgates

Let everything through

To open the floodgates is to remove a barrier that has been holding something back, allowing a sudden rush or torrent.

The literal image is of gates on a dam being opened to release water.

In common use, it's nearly always figurative: a court ruling might open the floodgates to lawsuits, or one confession might open the floodgates of tears.

The phrase typically carries a note of warning—once the floodgates open, what pours through may be difficult to control.

Related

let it rip · free flow · domino effect · chain reaction · pent-up · burst forth · deluge · torrent · catharsis · cascade · deregulation · tsunami · trigger · set in motion · landslide · let loose · commence · initiate

Opposites
release/containment

open the floodgatesstem the tide

Curb a growing force

hold back · dam up · contain · bottle up · shut the door on

control/restraint

open the floodgatesregulate

Control by rules

dole out · drip-feed · ration · parcel out · phase in

enabling/preventing

open the floodgatesnip in the bud

Stop at the start

put a stop to · shut down · block · prevent · halt

Family

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

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