Crossword Genius

Ignorant learner one marked externally (9)

Ross

I believe the answer is:

oblivious

'ignorant' is the definition.
(thesaurus)

'learner one marked externally' is the wordplay.
'learner' becomes 'l'.
'one' becomes 'i' (Roman numeral).
'marked' becomes 'obvious' ('obvious' can be similar in meaning to 'marked'**).
'externally' indicates putting letters inside (some letters go on the outside of others).
'l'+'i'='li'
'li' put inside 'obvious' is 'OBLIVIOUS'.

(Other definitions for oblivious that I've seen before include "Heedless" , "Not noticing" , "In ignorance" , "like Lethe?" , "Totally unaware" .)

I've seen this clue in The Independent.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.