breathe, drink (in), inhale, respire

snort, snuffle

savor (also savour)

behold, descry, discern, distinguish, espy, eye, look (at), note, notice, observe, perceive, regard, remark, sight, spy, view, witness

ascertain, catch on (to), discover, find out, hear, learn, realize

anticipate, divine, expect, foreknow, foresee

assume, conjecture, guess, presume, speculate, suppose, surmise, suspect