はおろか
(Wa oroka)
let alone / not to mention.
Connection rules
- +Noun + はおろか + (typically negative / more extreme statement).
- +'Not even X, let alone Y' — Y is more demanding than X.
- +Main clause often has も / さえ / すら for added emphasis.
Examples
1.
漢字はおろか、ひらがなも書けない。

Kanji wa oroka, hi ra ga na mo kake nai.
Not to mention kanji, I can't even write hiragana.
「let alone / not to mention」
2.
海外旅行はおろか、国内旅行さえしたことがない。

Kaigai ryokou wa oroka, kokunai ryokou sae shi ta koto ga nai.
Let alone overseas trips, I haven't even done domestic travel.
「let alone / not to mention」
Practice
After the injury, he couldn't even stand up, let alone walk.
怪我をして、___、立つことさえできなかった。
Romaji also accepted