feebly russian

• сла́бо

  weakly, faintly, feebly

  poorly, badly

  loosely, slackly

• бесси́льно

  powerlessly, helplessly, feebly

• жи́денько

  thinly, waterily, weakly (of a brew)

  sparsely, scantily, feebly

Examples

• Он лежа́л и очень слабо дыша́л.

  He lay breathing very feebly.