This is a quick list of a few vocabulary words that I’ve seen more than once and I think might be useful if added to WaniKani.
弊社(へいしゃ)- Our company (A useful word to use and understand in any business context)
当社(とうしゃ)- This company (ibid)
貴社(きしゃ)- Your company (ibid)
怪盗 (かいとう)- Phantom thief (A term you might come across in certain games/anime ;))
怪盗紳士 (かいとうしんし)- Gentleman thief (ibid)
切ない (せつない)- Heartrending (a useful term to describe something moving)
疑わしい (うたがわしい) - Dubious, suspicious, apocryphal (Another useful i-adjective)
気候変動 (きこうへんどう)- Climate change (The common term to describe the phenomenon)
選出 (せんしゅつ)- Election (One of the words often used for an election)
抜粋 (ばっすい)- Excerpt (For describing short bits of text)
列島 (れっとう)- Archipelago (A term used to describe any archipelago, including Japan!)
首相 (しゅしょう)- Prime minister, chancellor (A title similar to 宰相)
乙女 (おとめ) - maiden, young girl (The word “早乙女” is present in WaniKani, but not 乙女)
危うく (あやうく)- barely, almost, narrowly (Useful in many situations for a close call)
逆転 (ぎゃくてん)- turnabout, reversal of fortunes (Useful in the context of a court trial ;))
占拠 (せんきょ)- occupation, control (Standard term to describe a military occupation, etc.)
指南 (しなん)- training, instruction (Another word to describe training)
弁慶の泣き所 (べんけいのなきどころ)- Achilles’ heel, Benkei’s weak point (Self-explantory)
雌雄 (しゆう)- male and female, female and male, strengths and weaknesses, competition (ibid)
卑怯 (ひきょう)- cowardice, meanness (A relatively common phrase)
男尊女卑 (だんそんじょひ)- chauvinism, sexism (ibid)
卑しい (いやしい)- lowly, vile, mean (ibid)
暗号 (あんごう) - cipher, code (ibid)
暗示 (あんじ) - hint, suggestion (ibid)