The most common and most likely answer to this crossword clue is the 7 letter word ONEROUS
I've seen this crossword clue in The Daily Telegraph
O
N
E
R
O
U
S
More clues leading to the result ONEROUS
- Oppressive old tyrant leading America
- Heavy South African men nailing notoriously cruel despot
- Difficult individual to wake? Not entirely
- I wake up lacking energy — that's troublesome
- Old and anxious but not very demanding
- Demanding individual, Proust — peripheral sections cut
- Old Emperor taking on America, implying a lot of work
- Emperor in love with America becomes demanding
- Heavy individual with sour disposition
- Weighty responsibility saving deposit up
Buddy explains!
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 ONEROUS mean?
ONEROUS adjective- Imposing or constituting a physical, mental, or figurative load which can be borne only with effort; burdensome.