yellowness

noun

1. (uncountable, usually)The state, quality, or degree of being yellow in colour.

   “[…] at least there would be no harm in getting a few bottles of “stuff” from him, since if these proved useless it would still be possible to return to the Purifying Pills, which kept you alive, if they did not remove the yellowness.”

   “1924, Herbert Jenkins, The Bindles on the Rocks, London: Herbert Jenkins, Chapter VI, Part II, […] lemonade of a yellowness sufficient to convince the most inveterate pessimist of the presence of the lemon.”

2. (uncountable, usually)Cowardice.
3. (obsolete, uncountable, usually)Jealousy.

   “My humour shall not cool: I will incense Page to deal with poison; I will possess him with yellowness, for the revolt of mine is dangerous: that is my true humour.”

   “The vndiscreet carriage of some lasciuious gallant […] by his often frequenting of an house, and bold vnseemly gestures, may make a breach, and by his ouer familiarity, if he be inclined to yellownesse, colour him quite out.”