1. Relating to a type of telephone with buttons, each of which produces a tone which corresponds to the relevant digit

Encyclopedia: Touch-tone

• upright
• upright piano
• uprightly
• uprightness
• uprise
• uprising
• upriver
• uproar
• uproarious
• uproariously
• uproot
• uprooter
• uprush
• ups and downs
• ups-a-daisy
• Upsala
• upscale
• upset
• upset price
• upset stomach
• upsetter
• upsetting
• upshot
• upside
• upside-down