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They devote themselves to teaching, nursing, visiting the poor and taking care of orphans, the old and infirm, and the insane.
en.wikipedia.org The service of the members was to embrace, without distinction of creed or race, the poor, the sick, the infirm, and the unemployed.
en.wikipedia.org They included the ill, the infirm, the elderly, and children with no one to properly care for them.
en.wikipedia.org When brown bears attack these large animals, they usually target young or infirm ones, as they are easier to catch.
en.wikipedia.org He was infirm and died at a very young age.
en.wikipedia.org