afraid: terrified
angry: furious | outraged | irate
bad: terrible | horrible | horrendous | miserable | awful
beautiful: wonderful | lovely | stunning | charming | gorgeous
big: huge | massive
boring: tedious | dull | monotonous
careful: cautious | meticulous | vigilant
clever: brilliant
common: widespread | prevalent | ubiquitous
curious: inquisitive
cute: adorable | charming
dangerous: hazardous | perilous
difficult: challenging | complicated | tough | arduous
easy: straightforward | effortless | elementary
exciting: exhilarating | breathtaking | fascinating
expensive: costly
fast: rapid | swift
fragile: feeble | frail
friendly: amiable
fun: exhilarating | thrilling
funny: hilarious
glad: happy | delighted
good: great | exceptional | excellent | perfect | splendid
happy: thrilled | delighted | overjoyed
hard: tough | arduous
hungry: famished | ravenous | starving
important: crucial | essential | vital
interesting: alluring | enchanting | exciting | gripping | fascinating | provocative | riveting | stimulating
large: huge
necessary: essential | vital
noisy: deafening
often: frequently
old: ancient
open: flexible | amenable | transparent | eager | willing | outgoing
painful: excruciating
pale: ashen
perfect: flawless
poor: destitute | indigent
pretty: beautiful | dazzling | stunning
quick: rapid
quiet: faint | hushed | muted
rainy: pouring
rich: prosperous | wealthy
sad: dispirited | miserable | somber | sorrowful
scary: terrifying | horrifying | daunting | alarming
serious: grave
shiny: gleaming | sparkling
shy: coy | timid
simple: basic | elementary | straightforward | transparent | plain
small: tiny
smart: brilliant | astute
special: exceptional | extraordinary | unique
stupid: foolish | mindless | nonsensical
tasty: delicious
tired: exhausted
ugly: hideous
unhappy: miserable | distressing
useful: invaluable | universal | beneficial | handy | instrumental
valuable: invaluable
wide: vast | extensive
wild: feral | savage