Meaning : Express one's opinion openly and without fear or hesitation.
John spoke up at the meeting.
Synonyms : animadvert, opine, speak out, speak up
Meaning : Start playing.
The musicians struck up a tune.
Synonyms : strike up
Sound off ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Sound off ka matlab kya hota hai?