This is the 1750th most frequent Japanese word.
ピッタリ
Exactly; perfectly; just right.
Here, ピッタリ is used to mean that the clothing's size and style are exactly suitable, emphasizing precision and appropriateness.
この服は私にはピッタリです。
This clothing fits me perfectly.
In this context, ピッタリ conveys that his explanation was highly appropriate and well-suited to the situation.
彼の説明は状況にピッタリでした。
His explanation matched the situation perfectly.
Here, ピッタリ describes finding something that ideally fulfills the requirements or expectations for a gift.