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