knocking

• Substantivo que se refere ao som produzido por batidas repetidas em uma superfície, como uma porta, ou a um ruído anormal e recorrente em um motor ou rolamento.

A noun referring to the sound produced by striking a surface, such as a door, or a repetitive noise in an engine or bearing.

1. Sound of a knockA2formal

   The sound produced when someone or something strikes a surface, such as a door or an engine part.

   Batida

   • I heard a loud knocking at the door.
   • The knocking from the engine indicated a problem.
   • She woke up to the sound of knocking on the window.

   Sinônimosbangknockpoundraptapthump

2. Engine or bearing noiseB2formal

   A repetitive tapping or pounding sound in an engine or bearing, often indicating a mechanical issue.

   Batida no motor

   • The mechanic diagnosed the knocking as a worn bearing.
   • The car's engine developed a knocking sound after the long trip.
   • Ignoring the knocking in the engine can lead to serious damage.

   Sinônimosknockpingpoundingtapping

• Verbo usado para indicar o ato de bater em uma superfície com um toque ou golpe seco, geralmente para chamar atenção, entrar em algum lugar ou mover algo. Também pode significar fazer cair ou derrubar algo com um impacto.

A verb used to indicate the act of striking a surface with a sharp blow, typically to attract attention or cause something to move.

1. Strike a surfaceA1formal

   To hit a surface with a sharp blow, typically to attract attention or signal entry.

   Bater na porta

   • She knocked on the door before entering.
   • He knocked loudly on the window to get her attention.
   • The child knocked the glass off the table by accident.

   Sinônimosbangbeathammerhitpoundrapstriketapthump

2. Criticize or disparageB2informal

   To criticize someone or something, often unfairly or persistently.

   Criticar

   • Stop knocking his efforts; he's doing his best.
   • The critics knocked the movie for its weak plot.
   • She always knocks the local restaurants without trying them.

   Sinônimosbadmouthbelittlecriticizedenigratedeprecatedisparagemalignput downrun down

   Antônimoscommendcomplimentlaudpraise

3. Make a noiseA2informal

   To produce a sound by hitting something, often as a signal.

   Bater

   • The engine started knocking after the long drive.
   • I heard a knocking sound coming from the basement.
   • The pipes knock when the water is turned on.

   Sinônimosbangclunkhammerpoundraptapthump

Variantes phrasalknock againstknock downknock offknock outknock overknock up