treacherous

Words with a similar base: treacherous

'treacherous'

[treacherous.s.01] as in: dangerously unstable and unpredictable

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Examples:
treacherous winding roads
an unreliable trestle

'treacherous'

[punic.s.01] as in: tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans

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Examples:
Punic faith
the perfidious Judas
the fiercest and most treacherous of foes
treacherous intrigues