<p><strong>Adjective</strong></p><ul><li><p>Characterized by faithlessness or readiness to betray trust: traitorous.</p></li><li><p>Synonyms: treasonous, faithless, unfaithful.</p></li><li><p>Antonyms: loyal.</p></li><li><p>Deceptive, untrustworthy, or unreliable.</p></li><li><p>Synonyms: deceitful.</p></li><li><p>Antonyms: reliable.</p></li><li><p>Unstable or insecure, as footing.</p></li><li><p>Dangerous; hazardous: a treacherous climb.</p></li></ul>