[ 'trɛtʃ(ə)rəs ]
■ adjective
1》 guilty of or involving betrayal or deception.
2》 (of ground, water, conditions, etc.) having hidden or unpredictable dangers.
Derivatives
~ly adverb
~ness noun
Origin
ME: from OFr. trecherous , from trecheor 'a cheat', from trechier 'to cheat'.