Lacking strength or intensity; timid

दुर्बल

English Usage: His arguments were unforceful, failing to convince anyone.

Hindi Usage: उसके तर्क दुर्बल थे, जिसे किसी को भी मनाने में विफल रहा।

A lack of power or effectiveness

शक्ति की कमी

English Usage: The unforceful of his presence was felt by everyone in the room.

Hindi Usage: कमरे में हर किसी ने उसकी उपस्थिति की शक्ति की कमी महसूस की।