1 synonym for Auffassen

watch, observe, monitor, look out, be vigilant, be watchful, be alert, be on the lookout, keep watch, stay alert, stay vigilant, keep a lookout, be attentive, be on guard, be cautious, be wary, keep an eye on, keep tabs on, keep track of, be on the alert be on the watch, be on the lookout for, be on the watch for, be on the alert for, be on the guard for [x]