byggðu
byggðu is the imperative form of the Icelandic verb byggja, meaning to build. It is used to issue a direct command to a single person, as in Byggðu hús! which translates to Build a house.
Grammatical notes: byggðu is the second-person singular imperative form. In Icelandic, imperatives for informal singular address
Usage in context: byggðu appears in everyday speech and written Icelandic whenever a speaker wants someone
Etymology and related forms: byggja is derived from Old Norse byggja and is cognate with the English