Synonyms for Head over heels:

• adj.

  •absorbed (adjective)
  • in-tent,
  • more consumed,
  • most captivated,
  • pre-occupied,
  • more captivated,
  • pre occupied,
  • in tent,
  • really in to,
  • most consumed.
  •bewitched (adjective)
  • mad about,
  • transformed,
  • fallen for,
  • ensorcelled,
  • have a thing about,
  • under a spell,
  • have a bug in one's ear,
  • gaga about.
  •engrossed (adjective)
  • more gripped,
  • most riveted,
  • most monopolized,
  • caught in,
  • sub merged,
  • more riveted,
  • more into,
  • most in to,
  • most gripped,
  • up here in,
  • heavily in to,
  • most enthralled,
  • more submerged,
  • most into,
  • more enthralled,
  • most submerged,
  • more bugged,
  • more monopolized,
  • more diligent,
  • most bugged,
  • in to,
  • sub-merged,
  • more in to.
  •occupied (adjective)
  • clocked up,
  • too much on plate,
  • too much plate.

• adv

  •entirely (adverb)
  • precipitately,
  • completely,
  • unreservedly.

• adv.

  •all (adverb)
  • head over heels,
  • heels over head,
  • in great confusion,
  • topsy-turvy,
  • topsy-turvily.
  •flat-out (adverb)
  • licketysplit,
  • all way,
  • flatout,
  • un restrainedly,
  • for ones worth,
  • for one's worth,
  • to max,
  • allout,
  • all out,
  • for all one worth,
  • un-restrainedly,
  • for worth,
  • at good clip,
  • for one worth,
  • for all worth,
  • for all ones worth.

• Other synonyms:

  •
  • enamored,
  • besotted,
  • infatuated,
  • doting,
  • moonstruck,
  • lovey-dovey,
  • lovesick.
  •
  • devoted,
  • dotty,
  • fond,
  • loved up,
  • smitten.
  •
  • attached.
  •Other relevant words:
  • deeply,
  • intensely,
  • abruptly,
  • hurriedly,
  • like mad,
  • Palindromic,
  • altogether,
  • happen what may,
  • over,
  • headlong,
  • somersault,
  • totally,
  • inversely,
  • flat out,
  • backward,
  • widdershins,
  • carelessly,
  • in a circle,
  • wantonly,
  • unequivocally,
  • body and soul,
  • furiously,
  • categorically,
  • overeagerly,
  • Precipitantly,
  • clockwise,
  • Capsized,
  • desperately,
  • wildly,
  • utterly,
  • overzealously,
  • wrong side up,
  • overwhelmingly,
  • heedlessly,
  • rashly,
  • round and round,
  • vice versa,
  • in circles,
  • Hyperbatic,
  • turned around,
  • anticlockwise,
  • wholly,
  • in haste,
  • introverted,
  • suddenly,
  • reversed,
  • precipitously,
  • properly,
  • thoroughly,
  • Resupinate,
  • perfectly,
  • slapdash,
  • Retroverted,
  • unqualifiedly,
  • headfirst,
  • absolutely,
  • entirely,
  • backwards,
  • impetuously,
  • hotheadedly,
  • inversed,
  • Everted,
  • chiastic,
  • conversely,
  • overenthusiastically,
  • back-to-front,
  • upside down,
  • slap-bang,
  • Slam-bang,
  • hurry-scurry,
  • a corps perdu,
  • extremely,
  • out-and-out,
  • inverted,
  • contrariwise,
  • bottom side up,
  • around,
  • round,
  • transposed,
  • helter-skelter,
  • arsy-varsy,
  • holus-bolus,
  • Headforemost,
  • impulsively,
  • Invaginated,
  • far-gone,
  • fully,
  • in a whirl,
  • contrarily,
  • hastily,
  • definitely,
  • like crazy.