duck

verb (used with object), duck·ed, duck·ing.

to escape from by trickery or cleverness:
to duck one's pursuers.

to get around by trickery:
to duck the rules.

to avoid doing or fulfilling:
to duck an obligation.

to avoid answering directly:
to duck a question.

derived from the practice of lowering ones stature (that is, to duck) in order to evade a punch or strike

I've been trying to catch him after school but he keeps ducking me