adjective/vʁɛ.sɑ̃.blabl/
plausible, likely
“On a dit qu’il avait le surnom de Quixada ou Quesada, car il y a sur ce point quelque divergence entre les auteurs qui en ont écrit, bien que les conjectures les plus vraisemblables fassent entendre qu’il s’appelait Quijana.” — They have said that he had the surname of Quixada or Quesada, for there is on this point some divergence among the authors that have written on the topic, although the most plausible conjectures have it known that he was named Quijana.
Related: invraisemblable, vraisemblablement
From vrai + semblable, modelled after Latin verisimilis.