From Longman Dictionary of Contemporary Englishharmonioushar‧mo‧ni‧ous /hɑːˈməʊniəs $ hɑːrˈmoʊ-/ adjective 1 AGREEharmonious relationships are ones in which people are friendly and helpful to one another2 NICEsounds that are harmonious are very pleasant3 SUIT/LOOK GOOD TOGETHERparts, colours etc that are harmonious look good or work well together The decor is a harmonious blend of traditional and modern. —harmoniously adverb
Examples from the Corpus
harmonious• The building is a harmonious blend of structure and the surrounding land.• The overall social and political project is the creation of a harmonious, democratic cultural pluralism, a healthy cultural diversity.• If family relationships are relatively harmonious, expressions of affection and acceptance may be given frequently and in an unqualified manner.• harmonious flavors• That flexibility itself is generally associated with more harmonious households and less anxious child-rearing.• They were both lovely to me, and relations between them were particularly harmonious just then.• Would the brain and the recipient body establish a harmonious relationship?• If both you and the other person can find something to laugh about together it paves the way for a harmonious transaction. 