The word 'taciturn' refers to someone who is habitually silent and reserved in speech. To find the correct antonym, we need a word that conveys the opposite meaning, namely, someone who is talkative.
Let's analyze the options:
Therefore, the correct antonym for 'taciturn' is garrulous.
Word: Taciturn
Meaning: Habitually silent or quiet; reserved in speech.
Antonym: Garrulous
Meaning: Excessively talkative, especially on trivial matters.
Explanation:
Since "taciturn" describes a person who rarely speaks, the best antonym is "garrulous", which refers to someone who talks too much. They are opposite in terms of speaking habits.