Write the words with opposite meaning. know-________, rude-_________ ,happy-________ ,smart-_________, friendly-_______, pleasant-_______ ,beautiful-_______, possible-________ ,noisy-__________ ,formal-_________
known - unknown
rude - polite
happy - unhappy
smart - stupid
friendly - unfriednly
pleasant - unpleasant
beautiful - unbeautiful
possible - impossible
noisy - noiseless
formal - informal