-blē adverb
Etymology: treble (III) + -ly
1. : in a threefold manner or degree : triply
they have been trebly fortunate — Ernest Barker
2. : in a treble tone
listening to children trebly chant — British Books of the Month
-blē adverb
Etymology: treble (III) + -ly
1. : in a threefold manner or degree : triply
they have been trebly fortunate — Ernest Barker
2. : in a treble tone
listening to children trebly chant — British Books of the Month
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012