Translation guide
The English word "signal" covers a wide range of meanings, from physical gestures and traffic lights to abstract indications and electronic transmissions. Japanese uses different words depending on whether you mean a sign, a cue, a traffic signal, a radio signal, or a gesture. This guide breaks down the most useful meanings for learners.
The red, yellow, green lights controlling traffic.
The standard word for traffic signal or traffic light. Often used in compounds like 信号機 (しんごうき) for the physical device.
The signal turned red.
Turn right at the next traffic light.
Something that conveys information or prompts an action, often non-verbal.
A sign, signal, or cue given to someone, often a gesture or prearranged action. Commonly used for starting something or giving a go-ahead.
He signaled with his hand.
Please start on my signal.
Loanword from English, often used for a sign or signal in contexts like sports, performances, or informal cues. Can also mean autograph.
A sign or indication of something, often used for symptoms, omens, or early signs of a trend. More formal and abstract.
An electrical impulse or wave used to transmit information.
Also used for electronic signals, such as radio, TV, or digital signals. Context distinguishes it from traffic signals.
The radio signal is weak.
Radio waves; often used when talking about reception or transmission of wireless signals.
A movement or action used to communicate non-verbally.
The flashing light on a vehicle indicating a turn.
The action of making a signal or giving a sign.
While 信号 can mean 'signal' in many contexts, it is not used for human gestures or cues. Use 合図 or サイン instead. Saying 手で信号する sounds unnatural; use 手で合図する.
合図 is the native Japanese word for a prearranged signal or cue, often physical. サイン is a loanword and feels more casual or modern, often used in sports or entertainment. 合図 is safer for general use.
He gave the signal to start.
The traffic signal is broken.
I can't get a signal on my phone.
The coach gave a signal to the players.
景気回復の兆候が見られる。
There are signs of economic recovery.
Convert a digital signal to analog.
There's no cell phone signal.
ジェスチャーゲームをしよう。
Let's play charades.
Formal/technical term for turn signal, often used in official contexts or vehicle manuals.
If the turn signal blinks faster, the bulb may be burnt out.
This data signals an economic recovery.
He sent a signal for help.