v. 25B6; verb
the thieves were quickly apprehended : ARREST, catch, capture, seize; take prisoner, take into custody, detain, put in jail, put behind bars, imprison, incarcerate; informal collar, nab, nail, run in, pinch, bust, pick up, pull in, feel someone's collar; Brit. informal nick, do.
they are slow to apprehend danger : APPRECIATE, recognize, discern, perceive, make out, take in, realize, grasp, understand, comprehend; informal get the picture; Brit. informal twig, suss (out).