basic (adjective) basic: elementary, fundamental
Sinonime: arduous, bloodthirsty, bloody, bloody-minded, brutal, criminal, cruel, cutthroat, dangerous, deadly, destroying, destructive, devastating, exhausting, fell, ferocious, harrowing, hellish, homicidal, killing*, lethal, ruinous, sanguinary, sapping, savage, slaughterous, strenuous, unpleasant
Antonime: additional,
extra, inessential, nonessential,
outside,
peripheral,
secondary