Translation guide
In Japanese, the most common word for trousers/pants is ズボン, but several other terms exist depending on style, formality, and context.
The learner wants to refer to trousers in everyday conversation.
The most common and neutral word for trousers/pants in Japanese. Used by all ages and in most situations.
I bought new trousers.
Those trousers look good on you.
Can mean trousers/pants, but also means underpants. Context usually makes it clear, but be careful. More common in casual speech and among younger people.
Can be ambiguous; in some contexts it clearly means underpants. When in doubt, use ズボン.
I'm wearing new trousers today.
Refers specifically to dress trousers, often part of a suit. More formal and less common in everyday speech.
I'm looking for dress trousers to go with my suit.
The learner specifically means denim jeans.
The learner wants to refer to short trousers.
The word パンツ can mean either trousers or underpants. In casual conversation, it often means underpants, especially when used alone. To avoid confusion, use ズボン for trousers unless the context is very clear.
I took off my underpants. (likely meaning)
ズボン is the safest, most neutral word for trousers. パンツ is casual and can be ambiguous. スラックス is formal and refers to dress trousers. Use ズボン in most situations.
ジーパンが破れた。
My jeans ripped.
I wore shorts to the beach.