In a manner that suggests suppressed emotions or feelings.

दबे हुए भावनाओं के साथ

English Usage: He spoke smoulderingly, hiding his anger.

Hindi Usage: उसने दबे हुए भावनाओं के साथ बात की, गुस्से को छुपाते हुए।

Emitting smoke as if burning slowly without flame.

बिना आग के धीरे-धीरे धुंआ छोड़ना

English Usage: The smouldering remnants of the fire were all that remained.

Hindi Usage: आग के धुंएदार अवशेष ही बचे थे।