Here's what rhymes with restrein.
                        
                        
                    
                                line  brine  fine  nine  sign  mine  wine  pine  shine  shrine  thine  dine  sine  vine  align  sein  tine  twine  whine  zine  aline  design  divine  decline  define  assign  benign  spine  resign  incline  refine  supine  swine  affine  malign  proline  thymine  enshrine  recline  entwine  opine  stein  crystalline  endocrine  iodine  atropine  cysteine  palatine  pyridine  thiamine  underline  centerline  exocrine  hyperfine  saccharine  waterline  asinine  realign  reassign  superfine  interline  cosign  alkaline  confine  dopamine  undermine  borderline  redefine  redesign  serpentine  consign  lacustrine  anodyne  anticline  calamine  crinoline  intertwine  timberline  valentine  celandine  epinephrine  turpentine  imipramine  monoamine  porcupine  recombine  byzantine  columbine  eglantine  disincline  clementine  reconsign  concubine  neuroendocrine  noncrystalline  norepinephrine  tetracycline  polycrystalline  Words that almost rhyme with restrein
prime  lime  rhyme  rime  time  crime  climb  sublime  clime  dime  hym  slime  beim  chime  grime  heing  mime  thyme  chyme  birdlime  sauteing  begrime  paradigm  overtime  anytime  lysozyme  suppertime  anteing  maritime  mesenchyme  onetime  summertime  dinnertime  flexitime  mistime  pantomime  wintertime  environ