General

KanjiHiraganaMeaning
新しいあたらしいNew
あついHot (thing)
厚いあついKind; Cordial; Warm hearted; Serious; Faithful; Thick; Deep; Heavy; Abundant
いい /

よい
Good, Excellent, Fine, Agreeable, Pleasant

We use いい more commonly in speaking, in informal writing, and for describing physical things.
いそがしいBusy; Hectic; Occupied; Engaged
いたいPainful; Sore
いやUnpleasant; Disagreeable; Reluctant
うすいThin; Pale; Light; Watery; Dilute; Weak
うるさいNoisy; Loud; Fussy; Annoying; Troublesome; Importunate; Bossy
おいしいDelicious
大きいおおきい
おおきな
Big; Large; Great

おおきい has predictive and restrictive usage
おおきな is only restrictive .

大 (big)
おそいSlow; Late (as in late at night); Too late
おもいHeavy; Massive; Serious; Important; Severe; Oppressed
おもしろいInteresting; Amusing
からい(1) Spicy; Hot; Tough (on someone); Adverse; Harsh

(2) Salty
かるいLight (not heavy); Feeling light (moving easily); Light footed; Nimble; Agile
かわいいCute; Adorable; Charming; Lovely; Pretty; Precious; Darling; Pet; Cute; Tiny; Little
きたないDirty; Filthy; Unclean
きらいHate; Dislike; Suspicion; Tendency; Smack (of)
きれいPretty; Lovely; Beautiful; Fair; Clean; Clear; Pure; Tidy; Neat; Completely; Entirely
たかいExpensive; High price
小さなちいさなLittle; Small; Tiny

小 (little; small)
速い

早い
はやい(1) Quick; Fast; Hasty; Brisk
(2) Early; (too) soon; (too) early; Not yet;
(3) Easy; Simple

早 (early; fast)
速 (early; fast)

Use 早 when pertaining to relative time (as in, X is fast because it arrived earlier than expected).

Use 速 when pertaining to speed.
ひろいSpacious; Vast; Wide
ふとい(1) Fat; Thick; Deep (of a voice)
(2) Daring; Shameless; Brazen
まずいUnpleasant (taste, appearance, situation); Unappetizing
みじかいShort
やさしいEasy; Plain; Simple
よいGood, Excellent, Fine, Agreeable, Pleasant

We use よい in writing. It is more formal and tends to be used for describing non-physical things
まるいSpherical; Round; Circular
ほそいThin; Slender; Fine
せまいNarrow; Confined; Small
ならべるTo line up; To set up

v1, vt
たいせつImportant; Valuable; Worthy of care
たのしいEnjoyable; Fun
わるいBad; Poor; Inferior; Evil; Sinful; Unprofitable; Unbeneficial
やすいCheap; Inexpensive
へたUnskillful; Poor; Awkward; Impudent; Untactful

Colors

Kanji
Hiragana
いろ
Name
Color
あおBlue; Green
きいろ

きいろい
Yellow

More technically きいろ means “color of wood” from き (tree) いろ (color)
くろいBlack; Dark; Illicit; Wicked; Underground
みどりGreen
あかいRed