I don't think "söpö" is the correct translation for this, rather something like "ihana".
"lovely" is probably the best translation for ihana. I’ve changed the main translation into "cute". It will take a week or two for the course to catch up with my edit. :)
Ihana is more like lovely I think
Söpö is cute, suloinen is adorable?
We currently accept söpö, söötti, soma and suloinen. :)
"Adorable" can have a lot of translations such as "ihana", "hellyttävä", "soma" or whatever. I tried "ihana" which was the first that came to mind. Söpö would be "cute".