encouraging has 1 distinct synonym spread across 1 of its 2 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is discouraging.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
giving courage or confidence or hope
“encouraging advances in medical research”
furnishing support and encouragement
“the anxious child needs supporting and accepting treatment from the teacher”
Synonyms, antonyms and the broader and narrower relations for encouraging come from Princeton University’s WordNet. Full sources and licences.