Triumphantly means "victoriously." When someone does something triumphantly, it means they have achieved success or victory in a confident and proud manner. Let's explore this in more detail below.

Meaning of Triumphantly
Triumphantly is an adverb that describes an action or behavior characterized by victory, success, or accomplishment. It implies a sense of pride and confidence in achieving a desired result.

Explanation
To better understand the meaning of triumphantly, let's compare it to the other options given in the question.

a) Reluctantly: Reluctantly means to do something unwillingly or with hesitation. It is the opposite of triumphantly. When someone acts reluctantly, they are not embracing victory or success, but rather doing something with resistance or reluctance.

b) Forcefully: Forcefully means to do something with great strength or power. While forceful actions may lead to success, they don't necessarily imply triumph or victory. Forceful actions can be driven by aggression or the need to dominate rather than the sense of accomplishment that triumphantly entails.

c) Victoriously: Victoriously means to do something with a sense of triumph or success. This is the correct synonym for triumphantly. When someone acts victoriously, they are celebrating their achievements and feeling a sense of pride and accomplishment.

d) Quietly: Quietly means to do something in a calm, peaceful, or silent manner. It is the opposite of triumphantly. When someone acts quietly, they are not expressing their victory or celebrating their success with enthusiasm or pride.

In conclusion, triumphantly means to do something victoriously, with a sense of pride, confidence, and accomplishment. It is the opposite of reluctantly and quietly, and it differs from forceful actions as it emphasizes the positive and celebratory aspects of achieving success.