如火如荼

rúhuǒrútú
  1. like wildfire (idiom)
  2. unstoppable

CEDICT

  1. (to have) a mighty army like wildfire
  2. a daunting and vigorous momentum; flourishing; magnificent
  3. a mighty army like wildfire

Wiktionary

比喻军容壮盛浩大。参见「如荼如火」条。《二十年目睹之怪现状．第五八回》：「如火如荼，军容何盛。」后亦形容气势或气氛等的蓬勃、热烈。《老残游记．第一一回》：「钩连上些人家的败类子弟，一发做得如火如荼。」

重編國語辭典

  1. 事物的兴盛或气氛的热烈
  2. 军容壮盛浩大

維基詞典

Entry Composition

1 如火 rúhuǒ fiery
2 如 rú
  1. as
  2. as if
  3. such as
3 荼 tú
  1. thistle
  2. common sowthistle (Sonchus oleraceus)
  3. bitter (taste)
  4. cruel
  5. flowering grass in profusion

Related entries

锐不可当 ruìbùkědāng
  1. unstoppable
  2. hard to hold back
不衰 bùshuāi
  1. unfailing
  2. never weakening
  3. enduring
  4. unstoppable