trebly

== English == === Etymology === From treble +‎ -ly. === Adjective === trebly (comparative treblier or more trebly, superlative trebliest or most trebly) Having treble, or high-pitched, qualities. === Adverb === trebly (not comparable) (archaic) Three times, thrice To three times the extent or degree; triply. ==== Synonyms ==== (three times): thricely, threefold; see also Thesaurus:thrice