The Oxford Thesaurus An A-Z Dictionary of Synonyms - waylayv.

1) ambush, lie in wait for, await, intercept, pounce upon or on, swoop down on or upon, accost: You'll have to waylay him on his way to lunch if you want to speak to him. 2) attack, mug, seize, assault, accost, set upon: He was waylaid by a band of thieves and stripped of his belongings.