Definition of infirmly in US English:

infirmly

adverb

  • See infirm

    • ‘Nor am I the slightest bit interested in using the model of an out-dated, infirmly and inferiorly working European, Japanese and general world scenario.’
    • ‘The catalytic activity is related to the total SO42− groups bonded on the surface of the substrate but not those infirmly bonded.’