treacherous adj.

VERBS be, look, prove | become | remain

ADV. extremely, very | rather | notoriously the mountain's notoriously treacherous rocky crest

You can also check Google Dictionary: treacherous (English, 中文解释 ), wordnet sense

  • IELTS Speaking Topics (part 1,2,3)
  • IELTS Essay Writing Topics
  • IELTS Writing Ideas