weakly russian

• до́хлый

  dead, sickly, puny, weakly

• квёлый

  weakly, poorly

• сла́бо

  faintly, feebly, weakly, bad, poorly

• тлить

  to smolder, glow without flame

  to linger, remain weakly

Examples

• Э́то во́дка? — слабо спроси́ла Маргарита. Кот подпры́гнул на сту́ле от оби́ды. "Поми́луйте, короле́ва, — прохрипе́л он, — разве я позво́лил бы себе нали́ть да́ме во́дки? Э́то чи́стый спирт!"

  'Is that vodka?' Margarita asked weakly. The cat jumped up from its chair in indignation. 'Excuse me, your majesty,' he squeaked, 'do you think I would give vodka to a lady? That is pure spirit!'