You might be confusing the word weekly with weakly. These words are commonly misused.

Word parts

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week + -ly

Pronunciation

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Singular
weekly

Plural
weeklies

  1. (countable) A weekly is a magazine or newspaper that you get once a week.

Adjective

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Positive
weekly

Comparative
none

Superlative
none

  1. If something happens weekly, it happens once a week.