What does "gen up" mean?

To learn about something thoroughly British term for researching and becoming informed.

How do you use "gen up" in a sentence?

I need to gen up on the subject. She genned up before the interview. Gen up on the rules.

Phrasal Verb British ★★☆☆☆ Uncommon Casual

Meaning: To learn about something thoroughly

彻底了解，做功课

Informarse a fondo, empollar

（〜について）しっかり勉強する、情報を集める

(~에 대해) 철저히 조사하다, 공부하다

British term for researching and becoming informed.

英式英语表达，指研究并掌握信息。

Expresión británica para investigar y estar bien informado.

調べて詳しくなるというイギリス英語表現。

무언가를 조사하고 잘 알게 되는 영국식 표현.

Base verb: gen

Particle: up

Separable: No — the verb and particle stay together

I need to gen up on the subject.
我需要好好了解一下这个话题
Tengo que informarme bien sobre el tema
その件についてしっかり調べないと
그 주제에 대해 철저히 조사해야 해.
She genned up before the interview.
她在面试前做了功课
Se preparó a fondo antes de la entrevista
彼女は面接前に下調べした
그녀는 면접 전에 사전 조사를 했다.
Gen up on the rules.
把规则搞清楚
Informaos sobre las normas
ルールを調べておいて
규칙을 미리 알아둬.

Context: research, preparation

Tone: studious

British military slang from "general information".

Era: Modern

Generation: All ages

Social background: Universal