WordNet: soft drug

a drug of abuse that is considered relatively mild and not likely to cause addiction

• hypernym drug of abuse, street drug

• hypernym narcotic

• hyponym bhang

• hyponym cannabis, ganja, marihuana, marijuana

• hyponym haschisch, hash, hasheesh, hashish

soft drug

• (englanti) hard drug (antonym)
• (suomi) mieto huume (synonyymi)