"she was recovering from flu, and was very weak"

• lacking power or influence

  "the central government had grown too weak to impose order"

• (of a team or military force) containing too few members or members of insufficient quality

  "their problems arose from fielding weak teams in league matches"

• (of a faculty or part of the body) not able to fulfil its functions properly

  "he had a weak stomach"

• of a low standard; performing or performed badly

  "the choruses on this recording are weak"

• not convincing or logically forceful

  "the argument is an extremely weak one"

• exerting only a small force

  "a weak magnetic field"

"the salamander's tail may be broken off at a weak spot near the base"

• lacking the force of character to hold to one's own decisions, beliefs, or principles; irresolute

  "he was not weak or a compromiser"

• (of a belief) not held with conviction or intensity

  "their commitment to the project is weak"

• (of prices or a market) having a downward tendency

"a weak light from a single street lamp"

• (of a liquid or solution) heavily diluted

  "a cup of weak coffee"

• displaying or characterized by a lack of enthusiasm or energy

  "she managed a weak, nervous smile"

• (of features) not striking or strongly marked

  "his beard covered a weak chin"

• (of a syllable) unstressed