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mostly

/ˈməʊstli/ adverb

In Latin: plērumque Wiktionary

adverb Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about mostly at Wordnik → Where our words come from →

  1. In large part; mainly or chiefly.
    These accounts are largely inactive
  2. Usually; as a rule.
    by and large it doesn't rain much here

Origin

The sense “probably” is a calque from Indian languages such as Tamil அனேகமாக (aṉēkamāka).

From Wiktionary, via Kaikki.org (CC BY-SA)