〜にすぎない
Nothing more than, merelymachine translation
FormationNoun/plain form + にすぎない
〜にすぎない means "is nothing more than…": それは私の個人的な意見にすぎません (that is nothing more than my personal opinion). The speaker deliberately PLAYS DOWN the importance of something — it is insignificant, so don't overrate it.
Connection: noun + にすぎない is the most common; verbs and adjectives take the plain form (冗談で言ったにすぎない). The polite form is にすぎません. It comes from the verb 過ぎる (to exceed): "it does not go beyond that level."
This belittling nuance works in two directions: being modest about yourself (私はまだ学生にすぎない), or downplaying something in order to push back against it (それはうわさにすぎない — that is nothing more than a rumor). Sentences with にすぎない often include emphasizing words like ただ, ほんの, or まだ to strengthen the sense of "just that and no more."
Examples
それは私の個人的な意見にすぎません。
That is nothing more than my personal opinion.
彼はまだ十八歳の学生にすぎない。
He is still just an eighteen-year-old student.
これは冗談にすぎないから、気にしないでください。
This is just a joke, so please don't take it to heart.