o ‧ ver ‧ ex ‧ tend /ˌəʊvərɪkˈstend $ ˌoʊ-/ BrE AmE verb [transitive]
1 . to try to do or use too much of something, causing problems, illness, or damage
overextend yourself
Be careful not to overextend yourself. You’ve been very ill.
2 . to spend more money than you actually have:
Jackson’s company became overextended financially.
—overextended adjective