Word family noun decision indecision adjective decided ≠ undecided decisive ≠ indecisive verb decide adverb decidedly decisively ≠ indecisively
From Longman Dictionary of Contemporary Englishdecidedde‧cid‧ed /dɪˈsaɪdɪd/ adjective [only before noun] formal VERYdefinite and easily noticed a decided change for the betterExamples from the Corpus
decided• Jay liked her eyebrows, straight and black but with a decided curve at the end.• The new color is a decided improvement.• But the unexpected return of Enda Gormley last weekend after serious injury is a decided plus.• Knowing enough of the language to understand what everyone else is saying is a decided plus. 