averiguar, examinar, investigar, vigilar
atisbar, avizorar, escrutar, escudriñar, espiar, observar, vigilar
brujulear, callejear, caminar, circular, deambular, errar, fisgar, husmear, marchar, merodear, pasear, pendonear, rondar, vagabundear, vagar, zascandilear
amenazar
discernir, espiar, ver
