Meaning : With relatively high volume.
Example :
The band played loudly.
She spoke loudly and angrily.
He spoke loud enough for those at the back of the room to hear him.
Cried aloud for help.
Meaning : In manner that attracts attention.
Example :
Obstreperously, he demanded to get service.
Synonyms : clamorously, obstreperously
Loudly meaning in Bengali (Bangla).