IPA: /ˈrɛdɪʃnəs/
KK: /ˈrɛdɪʃnəs/
The quality of having a red or slightly red color.
The reddishness of the sunset made the sky look beautiful.
Reddishness → It is formed from "red" (from Old English "read", meaning the color red) and "-ish" (meaning having the quality of) and "-ness" (meaning the state or condition of). The word "reddishness" refers to the state or quality of being somewhat red.
Think of the color 'red' and remember that 'reddishness' means having the quality of being somewhat red.