Definition

A movement of liquid that goes back in the opposite direction from where it usually flows.

Example

The plumber fixed the issue of backflow in the pipes to prevent contamination.

Conversation

I noticed some strange water pooling in my yard after the rain.

That could be a sign of backflow from the drainage system.

Really? I didn't think that could happen here.

Yeah, it’s worth checking out before it causes bigger issues.

Synonyms & Antonyms

Root Explanation

Backflow → It is formed from "back" (from Old English "bæc", meaning the rear or reverse direction) and "flow" (from Old English "flowan", meaning to flow or run). The word describes the movement of a fluid flowing backward or in the reverse direction.

Memory Tip

Think of something moving 'back' ('bæc') and 'flowing' ('flowan') in the opposite direction — that's what backflow means.

Visually Confused Words