expression, particle
Emphasizes an extreme or unexpected example; often follows a noun or noun phrase. Similar to さえ but slightly more emphatic.
See also: さえ
子供でさえその問題が解ける。
Even a child can solve that problem.
彼は簡単な漢字でさえ読めない。
He can't even read simple kanji.
expression, particle
Used in conditional clauses after a noun or na-adjective; implies that the stated condition is sufficient. Often appears with ば, たら, or なら.
See also: さえ
暇でさえあれば、旅行に行きたい。
If only I had free time, I'd like to go on a trip.
元気でさえいれば、何でもできる。
As long as you're healthy, you can do anything.