The most common and most likely answer to this crossword clue is the 9 letter word OBLIVIOUS
I've seen this crossword clue in The Times
O
B
L
I
V
I
O
U
S
More clues leading to the result OBLIVIOUS
- Ignorant learner and I in clear
- Unaware, left island blocking patent
- It’s clear that around 50 I can be forgetful!
- Ignorant learner one marked externally
- Not aware of manifest covering intelligence centre
- Unaware of patent involving light metal
- Ignorant Labour leader: “one’s in clear”
- Flip contents in clear out
- Practically illuminated in clear blind
- About fifty, one is plain absent-minded
Buddy explains!
The straight part
We know that "I can be forgetful" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case i can be forgetful = oblivious.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 OBLIVIOUS mean?
OBLIVIOUS adjective- (usually followed by to or of) Lacking awareness; unmindful; unaware, unconscious of.
- Failing to remember; forgetful.