～に限らず
not limited to / not just
～に限らず（にかぎらず）attaches to a noun and means that a statement is not limited to that one case, it holds more widely. It is the negative ず form of 限る（かぎる, to limit）.
In English it maps to “not just X” or “not only X (but more broadly)”. The wider group often follows with も (also).
Extending beyond the obvious case
Pick the case the listener would expect, then use に限らず to say the situation goes beyond it.
週末に限らず混んでいる。
“It's crowded, and not just on weekends.”
- 週末（しゅうまつ）= weekend
- に限らず（にかぎらず）= not limited to
- 混んでいる（こんでいる）= is crowded
この店はお年寄りに限らず、若い人にも人気がある。
“This shop is popular not only with older people but also with young people.”
- この店（このみせ）= this shop
- は = topic marker
- お年寄り（おとしより）= older people
- に限らず（にかぎらず）= not limited to
- 若い人（わかいひと）= young people
- にも = with ... also
- 人気がある（にんきがある）= is popular
Compare this with ～に加えて: に加えて stacks one more concrete item on top of the first (“X, and on top of that Y”), while に限らず removes a boundary and opens the statement up to a whole wider group.
How to form it
Noun + に限らず
- 週末（しゅうまつ）= weekend → 週末に限らず（しゅうまつにかぎらず）= not just on weekends
- 子供（こども）= children → 子供に限らず（こどもにかぎらず）= not only children
- 日本（にほん）= Japan → 日本に限らず（にほんにかぎらず）= not only in Japan
Key idea
～に限らず erases a limit: “you might think this applies only to X, but in fact it applies far more widely.”
Other N2 grammar
Updated .