The most common and most likely answer to this crossword clue is the 10 letter word UNINSPIRED
I've seen this crossword clue in The Guardian
U
N
I
N
S
P
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D
More clues leading to the result UNINSPIRED
Buddy explains!

The straight part
We know that "Eliciting a yawn perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case eliciting a yawn perhaps = uninspired.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 UNINSPIRED mean?
UNINSPIRED verb- To divest of inspiration.
- Lacking inspiration; dull or dry