indigoin‧di‧go /ˈɪndɪɡəʊ $ -ɡoʊ/ noun [uncountable] 
Word Origin
Word OriginWORD ORIGINindigo
ExamplesOrigin:
1500-1600 Italian, Latin indicum, from Greek indikos ‘Indian’EXAMPLES FROM THE CORPUS
word sets- And the solid indigo of his intention shocked her.
- Dark, sensuous lilac is derived from the Persian word for midnight blue indigo, itself an import from the Indus.
- Male indigo birds sport beautiful metallic blue plumage, while male whydahs sometimes possess spectacularly long tails.
- On the far side of the islet the rocks plunged precipitously away into a mesmeric blind indigo.
- Otherwise, architecture was largely reduced to stubby tower-tops, inky and indigo, from which hostile fire poured.
- The Blessed Virgin as Stella Maris, the star of the sea, deepest indigo blue, sparkling.
- The landlords thereupon ordered their sharecroppers to plant no indigo and, simultaneously, increased the rent.
- We passed like wraiths gripping our anoraks against a colder night wind coming down from the deep indigo silhouetted mountains.
WORD SETS► Colours
a dark purple-blue colour → purple—indigo adjectiveamber, nounamethyst, nounapricot, nounaquamarine, nounashen, adjectiveauburn, adjectiveazure, adjectivebar, nounbarred, adjectivebeige, nounblack, adjectiveblack, nounblack, verbblack and white, adjectiveblacken, verbbleed, verbblood-red, adjectiveblue, adjectiveblue, nounbluish, adjectivebold, adjectivebottle green, nounbrassy, adjectivebrindled, adjectivebronze, nounbronze, adjectivebrown, adjectivebrown, nounbuff, nounburgundy, nouncarmine, nouncarroty, adjectivecerise, nouncerulean, nounchartreuse, nouncherry, nounchestnut, nounchestnut, adjectivechromatic, adjectivechrome yellow, nounclaret, nounclear, adjectivecoffee, nouncool, adjectivecopper, nouncoral, adjectivecream, adjectivecreamy, adjectivecrimson, adjectivecyan, adjectivedappled, adjectivedapple-grey, nounDay-Glo, adjectivediscoloration, noundiscolour, verbdrab, adjectivedull, adjectivedun, noundusky, adjectivedye, verbebony, adjectivefawn, adjectiveflaxen, adjectiveflesh-coloured, adjectiveflorid, adjectivefluorescent, adjectiveflush, nounfuchsia, noungarish, adjectivegarnet, noungaudy, adjectivegay, adjectiveginger, adjectivegold, noungold, adjectivegolden, adjectivegray, green, adjectivegreen, noungreenish, adjectivegrey, adjectivegrey, noungreyish, adjectivehazel, adjectiveindigo, nouniridescent, adjectiveivory, nounjade, nounjet-black, adjectivekhaki, nounlavender, nounleaden, adjectivelemon, nounlilac, nounlily-white, adjectivelime green, nounlivid, adjectiveloud, adjectiveluminous, adjectivelurid, adjectivemagenta, nounmagnolia, nounmahogany, nounmaroon, nounmatch, nounmauve, nounmellow, adjectivemellow, verbmonochrome, adjectivemousy, adjectivemuddy, adjectivemulticoloured, adjectivemustard, nounmuted, adjectivenavy blue, adjectiveneutral, adjectiveochre, nounoff-white, nounolive, nounopalescent, adjectiveorange, nounpale, adjectivepastel, nounpastel, adjectivepeach, nounpea green, nounpearly, adjectivepepper-and-salt, adjectivepink, adjectivepink, nounpinkish, adjectiveplum, nounplum, adjectivepowder blue, nounprimary colour, nounprimrose, nounprismatic, adjectivepuce, adjectivepure, adjectivepurple, nounpurplish, adjectivered, adjectivered, nounredden, verbreddish, adjectiveredhead, nounrestrained, adjectiverich, adjectiverose, nounrose, adjectiveroseate, adjectiverose-coloured, adjectiverosy, adjectiveroyal blue, nounruby, nounruddy, adjectiverusset, nounsable, adjectivesaffron, nounscarlet, adjectivesepia, nounshade, nounshocking pink, nounsienna, nounsilver, nounsilver, adjectivesilvery, adjectivesky-blue, adjectivesnow-white, adjectivesnowy, adjectivesoft, adjectivesombre, adjectivesteely, adjectivetaupe, nountawny, adjectiveteal, nountint, nountint, verbtone, nounturquoise, nountwo-tone, adjectiveultramarine, nounumber, nounvermilion, nounvibrant, adjectiveviolet, nounwarm, adjectivewaxen, adjectiveweak, adjectivewhite, adjectivewhite, nounwhiten, verbwhitish, adjectiveyellow, adjectiveyellow, nounyellow, verbyellowy, adjective