chatter, rattle on
喃 centers on continuous, idle vocal sound: chattering or rattling on, often with a sense of repetitive, meaningless talk.
喃 combines 口 (mouth) with 南, which likely contributes the sound. The character expresses chattering or muttering sounds.
A mouth 口 on the left and 南 on the right: imagine someone facing south and chattering endlessly, their mouth moving nonstop.
For ナン, picture a person chattering so much they can't even eat their naan bread: naan -> ナン, and the mouth keeps rattling on.
excuse me! (when calling out to someone)
chatteringly; wittering on; prattling on; blathering on
lover's whispers; sweet nothings; whispered intimacies
billing and cooing; holding an intimate, long-winded conversation in whispers
chu nom (formerly used Vietnamese script based on Chinese characters)