throw a spanner in the works
Idiomatic Expressions

Meaning

To cause a disruption that spoils plans.

Primary Function

Describing disruption

Communicative Purpose

To explain an unforeseen problem that derails progress.

Pattern

throw a; in the works

Core Structure

throw a; in the works

Função primária

Describing disruption

Propósito comunicativo

To explain an unforeseen problem that derails progress.

Situações de gatilho

Unexpected obstacles, technical faults, policy changes

Contextos

Engineering projects, business planning, team workflows

Padrão

throw a; in the works

Estrutura central

throw a; in the works

Slots de substituição

[tool] → spanner, wrench, monkey wrench

Colocados típicos

  • completely
  • threatened to
  • that's thrown

Substituições comuns

  • throw a wrench in the works (American English)

Erros comuns

throw spanner (missing article)

Similar / contraste

upset the applecart, ruin the plan, derail the process

Interferências

Not about tools.

Família do chunk

  • Obstacle idioms

Nuance

Frustrating and disruptive; implies avoidable interference.

Efeito pragmático

Expresses annoyance at unexpected obstacles that disrupt plans.

Dica de memória

Metal spanner tossed into rotating gears

Nota

Common in British and Australian English.

Upgrade path

introduce an unforeseen impediment (formal)

Frequência: MediumFormulaicidade: Semi-fixedTipo de construção: IdiomPrioridade de aquisição: UnknownPrioridade de output: BothTag de espaçamento: Short-termIdioma?: Sim

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