Like a ‘lorel’.

In a knavish manner; esp. unscrupulously, villainously, dishonestly.

In an unprincipled or dishonest manner; roguishly. Now rare.

In the manner of a knave; = knavishly, adv.

In a roguish manner; †wickedly, reprehensibly (obsolete); mischievously.

In a scoundrelly manner.

Badly, poorly; (also) villainously.

of the nature of a rapscallion; rascally.