N5 — outside your level filter
Is said whole, with nothing composed onto it and takes no だ／です, so there are no forms to conjugate.
元気がない
genkiganaito seem low in spiritsN5expression
Example sentences2
どうしたの、今日元気がないね。
doushita no, kyou genki ga nai ne.
What's wrong? You seem low in spirits today. casual
最近、彼は元気がないですね。
saikin, kare wa genki ga nai desu ne.
He's seemed low in spirits lately. neutral