The most common and most likely answer to this crossword clue is the 5 letter word BIDED
B
I
D
E
D
Buddy explains!

The straight part
We know that "Waited patiently" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case waited patiently = bided.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BIDED mean?
BIDED verb- To bear; to endure; to tolerate.
- To dwell or reside in a location; to abide.
- To wait; to be in expectation; to stay; to remain.
- To wait for; to await.