Simple past tense and past participle of busy.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "busied" in a sentence
"His sickly white skin busied itself with actively resisting the urge to create melanin, so as to not contrast with his tightly cropped flaxen hair."
"Mrs. Peterkin busied herself with Amanda over the remains of the breakfast."
"As soon as it was dark Nur al-Din busied himself with making ready the stallions and patiented till the first watch of the night was past; when, without a moment delay, Nur al-Din the lover full of teen, saddled them with saddles of the goodliest, and leading them forth of the stable, locked the door after him and repaired with them to the city-gate, where he sat down to await the coming of the Princess."