Question

treacherous 【TREACHEROUS】The treacherous soldier carried some important pieces of information to the enemy. 这叛逆的士兵向敌人传报了一些重要的消息。【重点词汇】treacherous adj. 叛逆的 反: loyal

Accepted Answer

['tretʃərəs] 
treacherousdangerously unstable and unpredictable
Treacherous means either not trusted or dangerous. A treacherous road might be icy or otherwise likely to cause a car accident. A treacherous friend will betray you.
Treachery refers to harmful acts you might do to someone who trusts you. It can also refer to being disloyal to your native country, but the word treason is more common in this sense. Treachery is from Middle English trecherie, from Old French, from trichier "to trick or cheat." The English word trick is from trikier, a slightly different spelling that was used in some dialects of Old French.
All forms of 'treacherous' will appear on average once every 603 pages.treacherouslytreacheroustreachery

Front	treacherous
Pron	['tretʃərəs]
Back	【TREACHEROUS】 The treacherous soldier carried some important pieces of information to the enemy. 这叛逆的士兵向敌人传报了一些重要的消息。【重点词汇】 treacherous adj. 叛逆的反: loyal
Vocab	treacherousdangerously unstable and unpredictable Treacherous means either not trusted or dangerous. A treacherous road might be icy or otherwise likely to cause a car accident. A treacherous friend will betray you. Treachery refers to harmful acts you might do to someone who trusts you. It can also refer to being disloyal to your native country, but the word treason is more common in this sense. Treachery is from Middle English trecherie, from Old French, from trichier "to trick or cheat." The English word trick is from trikier, a slightly different spelling that was used in some dialects of Old French. All forms of 'treacherous' will appear on average once every 603 pages. treacherously treacherous treachery

Treacherous Treachery Word English Trick Tretʃərəs Soldier Carried