English term
Chile
Specialisation in audiovisual media
Native in: Spanish (Variants: Latin American, Chilean)
Works in: English to Spanish, German to Spanish, Portuguese to Spanish
messy
Thank you in advance.
Proposed translations
Spain
Psychologist & Emergency Physician
Native in: Spanish (Variant: Standard-Spain) 
Works in: English to Spanish
juego sensorial / libre
Ver por ejemplo,
Kids just love getting mucky and making a mess – whether that’s squishing jelly through their hands, smearing mud across their faces or crunching rice krispies between their fingers!
So does messy play really benefit a child?
Yes! Messy play is extremely important for a child’s development. It provides children with an exciting tactile and sensory experience that inspires their curiosity, allows them to explore the world around them and enhances their learning, language and creativity. Children learn through experimentation and discovery and messy play encourages children to explore new textures and manipulate different materials through touch.
http://www.earlyyearsresources.co.uk/blog/2018/06/messy-play...
The importance of Messy play in a child’s development
La importancia del juego libre para el desarrollo de los niños
https://colegiobs.eu/news/the-importance-messy-play-childs-d...
La utilización del juego sensorial en el ámbito educativo
https://s3.amazonaws.com/academia.edu.documents/53087785/jue...
See also "Messy play" discussion in WR:
https://forum.wordreference.com/threads/messy-play.3452746/
Argentina
A realiable translator at your disposal
Native in: Spanish 
Works in: English to Spanish
desordenada
France
FR>ES Marketing/Environment/Literature
Native in: Spanish (Variants: Argentine, Rioplatense, Standard-Spain)
Works in: French to Spanish, Italian to Spanish, English to Spanish
desordenada
United States
Eager to assist with your language needs
Native in: Spanish
Works in: English to Spanish, Spanish to English
Desordenado o libre.
Area de juego desordenado o libre.
Messy play, or sensory play, is the term for any activities allowing children to work with their hands to create a controlled mess.
Pero si hay que traducir literalmente, yo usaría "desordenado"
Gracias.
Mexico
Confianza, certeza, creatividad.
Native in: Spanish (Variant: Mexican)
Works in: English to Spanish, Italian to Spanish, French to Spanish, and 6 more.
revuelta
Reference comments
United States
Don't just say it, say it right!
Native in: Spanish , English
Works in: English to Spanish, Spanish to English, English, and 1 more.
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