Questions & Answers about Losaðu reipið.
Losaðu is the singular imperative form of losa, so it means loosen! / release! / undo! when speaking to one person.
A useful way to think of it is:
- losa = the basic verb, to loosen / release / detach
- losaðu = loosen! / release! addressed to one person
In Icelandic, commands often use a special ending like -ðu in the singular imperative.