weakly
Definitions
In a manner lacking physical strength, energy, or vigor.
With little power, intensity, or force.
In a way that is not convincing or effective.
Examples
The old man smiled weakly as he recognized his long-lost friend.
The signal from the remote control was flickering weakly, indicating that the batteries were nearly dead.
Synonyms
faintly feeblely fragilely flimsily powerlessly delicately ineffectively
Antonyms
strongly powerfully firmly robustly vigorously sturdily forcefully