Topic: Antonyms, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The word "grate" typically means to irritate or annoy someone, often by causing discomfort or a sense of disturbance. When looking for an antonym, we seek a word that expresses the opposite idea—one that contributes to comfort or alleviation of discomfort.

Among the options provided, "soothe" stands out as the most appropriate antonym. To "soothe" means to calm someone or alleviate their distress, directly counteracting the irritation implied by "grate." For example, if a loud noise grates on your nerves, a soothing sound or action would help lessen that irritation and restore a sense of calm.

In contrast, the other options—"gather," "improve," and "forgive"—do not directly address the concept of irritability or discomfort. "Gather" relates to collecting things or people together, "improve" suggests making something better but not necessarily in a comforting sense, and "forgive" involves letting go of resentment rather than addressing irritation directly. Therefore, "soothe" is the clear choice as it encapsulates the essence of alleviating irritation, making it the correct antonym for "grate."