What does 何だか mean?
何だか is a Japanese adverb meaning “a little, somewhat, somehow” in English. It is written as 何だか in kanji, なんだか in hiragana, and nandaka in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
なんだかすごく辛いの。
Somehow it's been a rough day.