busy
UK[ˈbɪzi]US[ˈbɪzi]
adj
having a lot of work to do or a lot of activities happening
adj
(of a telephone line) in use because someone is speaking on it
adj
full of activity or people
v
to keep yourself occupied with an activity
Etymology
the word 'busy' originates from the old english 'bisig', meaning 'occupied, diligent, or active'. its ultimate origin is uncertain, though it is likely from a west germanic source. the core concept of 'active engagement' or 'occupation' has remained remarkably consistent from its old english form to its modern usage. over time, its application broadened from describing a person's state of activity to describing places, times, and telephone lines characterized by a high level of use or engagement.
Analysis
the word 'busy' is a simplex word of old english origin. it is not productively formed from smaller, recognizable morphemes in modern english.
Examples
she's too busy to take a vacation this year.
i tried calling, but the line was busy.
the restaurant is always very busy on friday nights.