Don't be so careless; check the figures one more time.
Tips
usage
颟 is bound — it appears almost only in 颟顸, meaning muddled and slapdash, careless about getting things right. It carries a clear note of disapproval, common in older fiction.
Right is the head radical 页, which in compounds points to the head or face. Here it locates the muddle-headedness in the mind — and underlies the secondary 'broad flat face' sense.
phonetic
㒼mán
phonetic element
Left is a 㒼-type element, used here for sound — the same phonetic body seen in 满 (full) and 瞒 (to hide). It gives the mān reading; with the head radical it suggests a clouded, unclear mind.
