Here's what rhymes with lenghtening.
                        
                        
                    
                                Words that almost rhyme with lenghtening
lengthening  threatening  reckoning  lessening  reddening  leavening  editing  settling  strengthening  beckoning  deafening  leveling  deadening  sectioning  freshening  reveling  nettling  reputing  mentioning  parenting  menacing  sentencing  meddling  crediting  peddling  entrancing  meriting  terracing  ferreting  pedaling  premising  resettling  seconding  beveling  caroling  deluging  headhunting  bevelling  deputing  pensioning  shellacking  necklacing  periling  tenanting  pebbling  kenneling  hennaing  questioning  trembling  unsettling  accrediting  breakfasting  heralding  nonthreatening  pencilling  processioning  restrengthening  developing  resembling  embarrassing  assembling  enveloping  inheriting  embezzling  imperiling  stencilling  disheveling  discrediting  unquestioning  credentialing  reassembling  redeveloping  subpenaing  disassembling  disinheriting  overdeveloping