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obligation

mastery

UK /ˌɒb.lɪˈɡeɪ.ʃn̩/ US /ˌɑ.blɪˈɡeɪ.ʃn̩/noun

card 1 of 10 · context meaning

Which meaning of "obligation" best matches its use in the sentence?

I am indebted to several friends for notes, observations, and correspondence on this subject... Other obligations are mentioned in the text.