efface

verb5

1. •
   To erase (as anything impressed or inscribed upon a surface); to render illegible or indiscernible.

   • Do not efface what I've written on the chalkboard.
2. •
   To cause to disappear as if by rubbing out or striking out.

   • Some people like to efface their own memories with alcohol.
3. •
   Of the cervix during pregnancy, to thin and stretch in preparation for labor.
4. •
   Of a woman: to have the cervix thin and stretch in this manner.

   • Some females efface 75% by the 39th week of pregnancy.
5. •
   To make oneself inobtrusive as if due to modesty or diffidence.

   • Many people seem shy, but they really just efface for meekness.