The word "bitter" generally refers to a strong, sharp taste or sensation that is often unpleasant. It is commonly associated with foods like coffee, dark chocolate, and certain vegetables like kale or Brussels sprouts. Beyond taste, "bitter" can also describe feelings of resentment or harshness, such as when someone feels hurt or wronged. In emotional contexts, it implies a lasting sense of anger or disappointment.
The word "bitter" comes from Old English "bitter," which is related to the Proto-Germanic "*bitrÅ," meaning "sharp, pungent, sour." It shares roots with similar words in other Germanic languages, indicating a long history of usage in relation to taste and feeling.