1. Characterized by quickness and firmness
   "his reply was unhesitating"
   - resolute

See also: decisive, unhesitatingly

• useless
• uselessly
• uselessness
• Usenet
• user
• user interface
• user-friendliness
• user-friendly
• username
• Ushas
• usher
• usher in
• usher out
• usherette
• ushering in
• using
• using up
• Uskub
• USMC
• USN
• Usnea
• Usnea barbata
• Usneaceae
• Usonian
• USP