Translation guide
The English word 'jam' can refer to a fruit preserve, a situation of being stuck or crowded, or a musical session. This guide covers how to express these concepts naturally in Japanese.
A sweet spread made from fruit and sugar, often used on bread or in baking.
The most common and general word for jam. It is a loanword from English and widely understood.
Please spread jam on the bread.
このジャムは甘すぎる。
This jam is too sweet.
Specifically refers to marmalade, a type of jam made from citrus fruits. Use when you want to be precise.
朝食にマーマレードを食べます。
I eat marmalade for breakfast.
A situation where vehicles are stuck in slow-moving or stationary traffic.
The standard word for traffic jam. Used for roads and highways.
高速道路で渋滞に巻き込まれた。
I got caught in a traffic jam on the highway.
渋滞を避けるために早く出発した。
I left early to avoid the traffic jam.
Refers to congestion or crowding in general, not just traffic. Can be used for trains, stations, or events.
When something is physically stuck and cannot move, like a door, machine, or object.
Intransitive verb meaning 'to be clogged' or 'to be jammed'. Used for pipes, printers, etc.
プリンターが紙詰まりした。
The printer jammed (paper got stuck).
排水口が詰まっている。
The drain is clogged.
Means 'to get caught' or 'to be stuck on something'. Used for objects getting snagged.
Intransitive verb meaning 'to be stuck between things' or 'to be jammed in a narrow space'.
A place that is extremely full of people, making movement difficult.
Means 'full house' or 'packed'. Commonly used for trains, buses, and venues.
電車が満員で乗れなかった。
The train was jam-packed and I couldn't get on.
An onomatopoeic adverb meaning 'jam-packed' or 'squeezed tightly'. Very casual and vivid.
Literally 'packed like sushi', meaning extremely crowded. Often used for trains or small spaces.
An informal gathering where musicians improvise together.
A direct loanword from English, widely used among musicians.
今夜、友達とジャムセッションをする。
I'm going to have a jam session with friends tonight.
Short for 'jam session' or any musical session. Commonly used in casual contexts.
The loanword ジャム only refers to the fruit preserve. For traffic jams, use 渋滞. For mechanical jams, use 詰まる or other verbs. Using ジャム in these contexts will cause confusion.
A more formal or explicit term for traffic jam, often used in news or official contexts.
交通渋滞がひどいですね。
The traffic jam is terrible, isn't it?
駅は通勤時間帯に混雑する。
The station gets jammed during rush hour.
ドアが何かに引っかかって開かない。
The door is jammed on something and won't open.
指がドアに挟まった。
My finger got jammed in the door.
会場は人でぎゅうぎゅうだった。
The venue was jammed with people.
通勤電車はすし詰め状態だ。
The commuter train is jammed like sardines.
Means 'improvisation' or 'impromptu performance'. More formal than ジャムセッション.
彼らは即興演奏を楽しんだ。
They enjoyed jamming (improvising).
週末にセッションしよう。
Let's jam this weekend.