inattention

NOUN /,ɪnə'tɛnʃən/
11 LETTERS · 4 SYLLABLES · STARTS WITH I

inattention is a valid 11-letter word worth 11 points in Scrabble and 14 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1A1T1T1E1N1T1I1O1N1
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =11 PTS
DOUBLE WORD → 22TRIPLE WORD → 33
MEANING

What does inattention mean?