一斉 , いっせい
issei
JLPT 2
- simultaneous; all at once
整 える, 調 える, 斉 , ととのえる
totonoeru
JLPT 1
- to put in order; to arrange; to adjust
- to get ready; to prepare
- to raise money
斉 , 齊 , せい
sei
- Qi (kingdom in China during the Spring and Autumn Period and the Period of the Warring States); Ch'i
斉唱 , せいしょう
seishō
- singing or chanting in unison
百花 , ひゃっかせいほう
hyakkaseihō
- "Let a hundred flowers blossom"; "Hundred Flowers" campaign
斉射 , せいしゃ
seisha
- volley; fusillade
Build Your Japanese Vocabulary the Smart Way
You’re already looking up Japanese words—why not actually master them? Nihongo Master gives you powerful tools to build, practice, and retain Japanese vocabulary that sticks.
- 📚 Custom study lists for any word or kanji you look up
- 🧠 Spaced Repetition System (SRS) to reinforce memory
- ✍️ Writing practice sheets for kanji and kana
- 🧩 Quiz mode to test mastery
- 🎯 Lesson integration to see words in context
- 🔔 Progress tracking and review reminders
No credit card required. Cancel anytime.