THESAURUS
lost in
absorbed, absorbed in, buried in, caught up in, contemplating, contemplative, devoted, devoted to, engaged, engrossed, engrossed in, immersed in, intent, intent on, involved, meditating, meditative, monomaniacal, monopolized, obsessed, occupied, preoccupied, single-minded, studious, studying, submerged in, swept up, taken up with, totally absorbed, wrapped in, wrapped up in
