Note: these 'words' (valid or invalid) are all the permutations of the word red. These words are obtained by scrambling the letters in red.
Definitions and meaning of red
enPR: rĕd, IPA(key): /ɹɛd/
Homophone: read(past tense/participle)
From Middle Englishred, from Old Englishrēad, from Proto-Germanic*raudaz (compare West Frisianread, Low Germanroot, rod, Dutchrood, Germanrot, Danish and Norwegian Bokmålrød, Norwegian Nynorskraud), from Proto-Indo-European*h₁rowdʰós, from the root *h₁rewdʰ- (compare Welshrhudd, Latinruber, rufus, Tocharian Artär, Tocharian Bratre, Ancient Greekἐρυθρός(eruthrós), Albanianpruth(“redhead”), Old Church Slavonicрудъ(rudŭ), Czechrudý, Lithuanianraúdas, Avestan𐬭𐬀𐬊𐬌𐬛𐬌𐬙𐬀 (raoidita), Sanskritरुधिर(rudhirá, “red, bloody”)).
red (comparativeredder, superlativereddest)
Having red as its color.
The girl wore a red skirt.
(of hair) Having an orange-brown or orange-blond colour; ginger.
Her hair had red highlights.
(card games, of a card) Of the hearts or diamonds suits. Compare black(“of the spades or clubs suits”)
I got two red queens, and he got one of the black queens.
(often capitalized) Supportive of, related to, or dominated by a political party or movement represented by the color red:
Left-wing parties and movements, chiefly socialist or communist, including the U.K. Labour party and the Social Democratic Party of Germany.
"Only Nixon could go to China" was the refrain of conventional wisdom during Richard Nixon’s 1972 official visit to Mao Tse-tung’s regime. Nixon’s anti-communist credentials, however dubious, provided useful camouflage as he opened diplomatic relations with Red China and made breathtaking concessions that an undisguised liberal couldn’t get away with. 
the red-black grand coalition in Germany
(US, 21st century) the U.S. Republican party
a red state
a red Congress
(chiefly derogatory, offensive) Amerind; relating to Amerindians or First Nations
(astronomy) Of the lower-frequency region of the (typically visible) part of the electromagnetic spectrum which is relevant in the specific observation.
(countable and uncountable) Any of a range of colours having the longest wavelengths, 670 nm, of the visible spectrum; a primary additive colour for transmitted light: the colour obtained by subtracting green and blue from white light using magenta and yellow filters; the colour of blood, ripe strawberries, etc.
(countable) A revolutionary socialist or (most commonly) a Communist; (usually capitalized) a Bolshevik, a supporter of the Bolsheviks in the Russian Civil War.
(countable, snooker) One of the 15 red balls used in snooker, distinguished from the colours.
(countable and uncountable) Red wine.
(countable, informal, Britain, birdwatching) A redshank.
(derogatory, offensive) An Amerind.
(slang) The drug secobarbital; a capsule of this drug.
1971, Hunter S. Thompson, Fear and Loathing in Las Vegas (Harper Perennial 2005), page 202:
The big market, these days, is in Downers. Reds and smack—Seconal and heroin—and a hellbroth of bad domestic grass sprayed with everything from arsenic to horse tranquillizers.
(informal) A red light (a traffic signal)
(Ireland, Britain, beverages, informal) red lemonade
(particle physics) One of the three color charges for quarks.
(US, colloquial, uncountable) chili con carne (usually in the phrase "bowl of red")
1982, The Rotarian (volume 140, number 1, page 39)
Houston visited a home in an early pioneer settlement where he was offered a bowl of red. Houston eagerly took his first large spoonful. His eyes watering, he spat out his bite […]
(informal) The redfish or red drum, Sciaenops ocellatus, a fish with reddish fins and scales.