English Reference
adjective

sly

adj.
US /ˈsɫaɪ/ UK /slˈaɪ/ sly

  1. 01 B2 Upper Intermediate

    clever at tricking people or hiding your true plans.

    artfully cunning or wily; exhibiting a deceptive nature to achieve one's goals.

    Simple

    He is a sly businessman who always manages to get the best deal.

    In context

    The negotiator employed a sly tactic, withholding key information until the final hour to force a favorable compromise.

  2. 02 B2 Upper Intermediate

    doing something in a quiet or secret way so that others do not notice.

    marked by or performed with artful secrecy; acting in a stealthy manner to avoid detection.

    Simple

    She took a sly look at her phone under the table during the meeting.

    In context

    With a sly movement of his hand, the magician swapped the cards while the audience was distracted by the smoke.

    stealthysurreptitioussneaky
This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated