The most common and most likely answer to this crossword clue is the 9 letter word DICTATION
I've seen this crossword clue in The Daily Telegraph
D
I
C
T
A
T
I
O
N
More clues leading to the result DICTATION
Buddy explains!
The straight part
We know that "Speech in the office" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case speech in the office = dictation.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 DICTATION mean?
DICTATION noun- Dictating, the process of speaking for someone else to write down the words
- An activity in school where the teacher reads a passage aloud and the students write it down
- The act of ordering or commanding
- Orders given in an overbearing manner