Here's what rhymes with complacent.
                        
                        
                    
                                complaisant  nascent  adjacent  nonadjacent  Words that almost rhyme with complacent
patient  hastened  chastened  blazoned  emblazoned  impatient  occasioned  stationed  vacationed  latent  placement  blatant  complainant  raiment  payment  latest  basement  vacant  reagent  claimant  bracelet  basest  emplacement  plainest  plainchant  greatest  replacement  pavement  platelet  containment  flagrant  fragrant  repayment  assailant  bravest  vagrant  abasement  arraignment  debasement  divalent  entrainment  intranet  prepayment  nonpayment  derailment  lakefront  misplacement  palest  sadist  straightest  cadenced  degassed  sanest  underpayment  vainest  chastest  tamest  gamest  fainest  halest  unchastest  statement  arrangement  displacement  attainment  amazement  abatement  safest  covalent  curtailment  derangement  enslavement  faintest  effacement  wavefront  entailment  shamefaced  inhalant  defacement  encasement  obtainment  anapest  detainment  ordainment  subbasement  opaqued  staidest  inanest  urbanest  engagement  entertainment  rearrangement  supernatant  estrangement  understatement  restatement  misstatement  escapement  disarrangement  prearrangement  quaintest  edutainment  humanest  insanest  sedatest  unsafest  ascertainment  overstatement  infotainment  affidavit  disengagement  reinstatement