It is MONO. The Mona in the first three letters and last letter, with Omani , the Arab, inserted
Thank you for the proper explanation of the composition of the word.
Yesterda I did manage to print the crossword. The previous week, there must have been a glitch in the printer because it gets used so very seldom, but I knew the cartridge wasn't
that old, so crossed my fingers and, yes, it worked!
bluehillside
Your reminder about the just about unlimited words for anagrams has helped. Clue:
4 across: Mr Toad an eccentric lacking definite plan (2,6)
It took me until this morning to think, oh yes, 'eccentric' = anagram.
Answer: AT RANDOM