To burn slowly without flames
धीरे-धीरे जलना
English Usage: The coals continued to smolder long after the fire had died down.
Hindi Usage: आग बुझ जाने के बाद भी कोयले धीरे-धीरे जलते रहे।
dheere-dheere jalna, dheere dheere jalna, dheere-dheere jhalna, dheere dheere jhalna