English Reference
noun · verb

loop

n. · v.
US /ˈɫup/ UK /lˈuːp/ loop UK spelling looped, LOOPS

  1. 01 B1 Intermediate

    n.a shape made by a curve that crosses itself, leaving an opening in the middle.

    n.a shape produced by a curve that bends around and crosses itself, creating an enclosed or semi-enclosed opening.

    Simple

    He tied the rope into a small loop to hang the swing from the tree.

    In context

    The designer used a series of decorative loops in the ironwork to give the gate a more elegant appearance.

  2. 02 B2 Upper Intermediate Technical Computing

    n.a set of instructions that a computer repeats many times.

    n.a programmed sequence of instructions that is executed repeatedly until a specific condition is met.

    Simple

    The program got stuck in an infinite loop and I had to restart my computer.

    In context

    The developer optimized the inner loop of the algorithm to reduce the processing time required for large datasets.

  3. 03 B1 Intermediate Music

    n.a piece of music or video that plays over and over again.

    n.a segment of audio or video media designed to be played continuously in a seamless repetition.

    Simple

    The drum beat played on a loop throughout the entire song.

    In context

    The artist created a haunting atmosphere by layering several vocal loops of varying lengths over a steady bassline.

  4. 04 B2 Upper Intermediate

    n.a road or path that goes in a circle and ends where it started.

    n.a transport route, such as a road or railway, that returns to its starting point without requiring a reversal.

    Simple

    We took the hiking loop that goes around the lake and back to the car park.

    In context

    The city's new light rail system includes a downtown loop to facilitate easier transfers between the major commuter lines.

  5. 05 B2 Upper Intermediate Informal

    n.to be part of a group that shares information.

    n.the state of being informed about or involved in a particular process or decision-making circle.

    Simple

    Please keep me in the loop regarding any changes to the project schedule.

    In context

    The junior analysts felt they were being kept out of the loop during the final stages of the merger negotiations.

    Usage

    Almost always used in the phrases 'in the loop' or 'out of the loop'.

  6. 06 B2 Upper Intermediate

    v.to make something into a loop shape or to move in a circle.

    v.to form into a loop or to move in a path that follows a loop.

    Simple

    She looped the scarf twice around her neck to stay warm.

    In context

    The pilot looped the aircraft during the airshow, drawing a perfect vertical circle against the clear blue sky.

  7. 07 B2 Upper Intermediate Computing

    v.to make a video or song play again and again.

    v.to play a digital file or tape segment in a continuous, repeating cycle.

    Simple

    I looped my favorite part of the video so I could study the dance moves.

    In context

    The gallery installation looped a three-minute film of the ocean, creating a meditative environment for the viewers.

The result is a feedback loop: the story shapes expectations, expectations shape behaviour, and behaviour can appear to confirm the original story.

The Guardian· 9 Aug 2026

That is the feedback loop: the current helps keep the North Atlantic salty enough for the current to keep running.

BBC News· 14 Jul 2026

From Middle English loupe (“noose, loop”), earlier lowp-knot (“loop-knot”), of North Germanic origin, from Old Norse hlaup (“a run”), used in the sense of a "running knot", from hlaupa (“to leap”), ultimately from Proto-Germanic *hlaupaną (“to leap, run”). Compare Swedish löp-knut (“loop-knot”), Danish løb-knude (“a running knot”), Danish løb (“a course”). More at leap. The verb is derived from the noun.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin gem-pro *hlaupaną
Level C1 · Advanced
Frequency Common
Updated