1. In a rueful manner
   - ruefully, remorsefully

See also: contrite

• unstop
• unstoppable
• unstoppered
• unstrain
• unstrained
• unstrap
• unstratified
• unstratified language
• unstressed
• unstring
• unstructured
• unstrung
• unstuck
• unstudied
• unstudious
• unstuff
• unstylish
• unsuasible
• unsubdivided
• unsubduable
• unsubdued
• unsubmissive
• unsubscribe
• unsubstantial
• unsubstantialise