GrammarJLPT N5
いがい
→ excluding
Excluding / Except for / Other than
JLPT N5SuffixNeutral
以外 is a noun-like suffix that attaches to nouns, verbs, and other elements to express the meaning of "other than," "except for," or "outside of" a given scope. It draws a boundary around something and then points to everything that lies outside that boundary. When attached to a noun, it takes the form Noun + 以外; when attached to a verb or clause, the plain form is used before 以外. The resulting phrase often functions adverbially with the particle に (as in 以外に, meaning "besides" or "other than") or as a topic/subject with は or が. 以外 is frequently paired with negative predicates to convey the idea that nothing exists or applies outside the stated item, similar in meaning to しか～ない ("nothing but"). However, 以外 is more neutral and informational, whereas しか～ない carries a stronger nuance of limitation or emphasis. Compared to のほかに, which also means "besides" or "in addition to," 以外 tends to feel slightly more formal or precise, though both are common in everyday speech and writing.
Functions
#1 Excluding / Except for a specific item
Structure
Noun + 以外 + は + Negative predicate
日本語以外は話せません。
Here 以外 attaches to the noun 日本語 to mark it as the one exception, and the negative predicate 話せません tells us that everything outside that boundary does not apply. The combination of 以外 + は + negative verb is one of the most common patterns, effectively meaning "nothing other than X." This usage is functionally close to 日本語しか話せません, but 以外 presents the exclusion in a more matter-of-fact, descriptive way.I can't speak anything except Japanese.
Structures
- Noun
- Noun + 以外 (+ に/は/の)
- Verb (plain form)
- Verb (plain form) + 以外 (+ に/は/の)
Common mistakes
A common error is using 以外 with a positive predicate when a negative one is intended, or vice versa. For example, saying 日本語以外話します without は and a negative verb creates confusion — the correct exclusive pattern requires a negative predicate (日本語以外は話せません). Another frequent mistake is confusing 以外 with 以上 (above / more than) or 以内 (within), since they share the 以 kanji but have very different meanings. Learners also sometimes use 以外 interchangeably with しか～ない without realizing that しか requires a negative verb form and carries a stronger emotional nuance of limitation, while 以外 is more neutral and descriptive. Finally, forgetting the particle after 以外 — particularly に, は, or の — can make the sentence grammatically incomplete or ambiguous.
Related
のほかにを除いてしか～ないだけ以上以内