B1not strong, or not strong enough to work, last, succeed, persuade, or be effective: It's not surprising you feel weak if you haven't eaten properly for days.The electromagnetic field strength becomes weaker as you move further away from high voltage cables.He was a weak king surrounded by corrupt advisers.Any evidence that exists to support the hypothesis is fairly weak.He gave the weakest of excuses when asked why he was late.Weakness and vulnerabilityB2describes a drink that contains a lot of water compared to its other contents, so that it does not have a strong flavour: I can't stand weak coffee/tea.Drinks - general words›specializeddescribes an acid, alkali, or chemical base that does not produce many ions (= atoms with an electrical charge) when it is dissolved in waterTypes of chemicalSpecific chemicals, chemical compounds and gasesSubstances and structures in the bodyweakly
/-li/adverb›"The pain seems to have eased a little with these new tablets," he said weakly.Weakness and vulnerability