wayward
Synonym discussion
Sense: adjective/1
'Wayward' usually suggests that a person, action, or thing has strayed from guidance or from the line it ought to follow. 'Rebellious' is stronger for open resistance to authority. 'Erratic' focuses on unpredictability and changing behavior, especially in sense 2, without the idea of will. 'Stray' is the ordinary word for moving away from the right place or group. Choose 'wayward' when you want a slightly literary word for something that does not stay under control or does not go where it should.
Common collocations
Etymology
'Wayward' is formed from 'way' and the old directional ending '-ward'. It first referred to movement away from the proper way, and later broadened to people, behavior, and results that do not stay under guidance or do not go where they should.
First known use
14th century
14th century, in the meaning defined at sense 1