Vocabulary

experimental; provisional

convenience

continuous; sustained; sustainable; durable; persistent

able; capable; competent; talented; efficient

useful; helpful

pseudo; quasi; false; para-; mock; sham

scary; frightening; eerie; dreadful

round; circular; spherical

joyful (news, event, etc.); joyous; delightful (e.g. result); pleasing (e.g. sight); gratifying; welcome

immeasurable; infinite; inestimable

absolute

pleasant; delightful; enjoyable; joyful; cheerful; amusing

unlimited; unrestricted; limitless

desirable; hoped for; preferable; advisable

unpleasant; disagreeable; displeasing; uncomfortable; unhappy

eternal; everlasting; unchangeable; immutable; immovable; constant

irregular; unsystematic; unsteady; disorderly

inevitable; necessary; certain; sure

moderate (degree); proper (amount); temperate; suitable

halfway; half measures; unfinished; incomplete; by halves; half-baked

crude; rough; plain; humble; shabby; poor-quality

tacit; unspoken; implicit

grand; magnificent; lavish; large scale; prosperous; thriving

cool; refreshing

newly appointed; inaugural

good (condition); going well; fine; smooth

particular; special; exceptional; especial

good humour (humor); good mood

sweet-tasting; sweet; sugary; sugared

careful; thorough; meticulous; scrupulous

established; fixed; prearranged; predetermined

uniformity; equality

most difficult; next to impossible

rash; thoughtless; careless; hasty; imprudent

primeval; primordial; primitive; pristine

chronic

wild; uninhibited; extravagant; rampant

wealthy; rich; affluent

uncertain; unreliable; inauthentic; insecure

indispensable; essential; requisite; required; compulsory; necessary