Translation guide
The English phrase "back seat" can refer to a physical seat in a vehicle or a metaphorical position of non-involvement. This guide covers both literal and figurative uses, with natural Japanese equivalents.
Referring to the seat(s) in the back of a car, bus, etc.
Standard term for the back seat of a vehicle. Neutral and widely understood.
Please sit in the back seat, children.
The back seat is a little cramped.
More casual and general. Can be used for any back seat, not just vehicles.
Let's sit in the back seat of the bus.
Similar to 後ろの席, but explicitly uses 座席 (seat). Slightly more formal.
Please don't put luggage on the back seat.
To become less important or to let something else take priority.
Means 'to become secondary' or 'to take a back seat'. Very common and natural.
Work is so busy that my hobbies have taken a back seat.
Means 'to be put off' or 'postponed', implying lower priority. Often used when something is delayed in favor of something else.
Literally 'priority goes down'. More formal and explicit.
Means 'to become less prominent' or 'fade into the background'. More metaphorical.
A passenger who gives unwanted advice to the driver; a person who tries to control something they are not responsible for.
General term for someone who butts in or gives unsolicited advice. Not limited to driving.
He's always a back-seat driver; it's annoying.
Someone who gives orders or directions, often unwanted. Can be used for back-seat drivers.
Direct loanword from English. Understood by some, but not as natural as native phrases.
Do not translate 'take a back seat' literally as 後部座席を取る. Use the idiomatic phrases provided.
An urgent issue came up, so the meeting took a back seat.
Health management tends to take a back seat to work.
With the new product release, the old model took a back seat.
A back-seat driver is dangerous.
She's a back-seat driver, so I don't want to go for a drive with her.