haたすtasuはたhatasu
1.

To carry out a task or obligation that one has intended or is required to complete, achieving the planned goal or responsibility in its entirety.

2.

To successfully perform a duty or fulfill an expectation associated with a specific role or position, demonstrating reliability in function.

3.

To complete an action to its fullest extent, often indicated by a verb form that emphasizes thoroughness in execution.

4.

To realize a dream or aspiration, bringing a long-held wish to fruition through diligent effort.

5.

To serve its intended function or exhibit its capabilities effectively, illustrating the proper operation of an object or system.

Example:

君はその義務を果たすべきである。

つか使tsukaihaたすtasu
1.

To completely consume all available resources, leaving nothing behind, often referring to money or goods.

2.

To exhaust or deplete something through extensive use, resulting in it being fully utilized or worn out.

Example:

そのお金は使い果たしてはいません。

uchihaたすtasu
1.

To kill an adversary decisively, often implying a complete and thorough defeat in a conflict or battle.

2.

To eliminate a foe entirely, leaving no survivors, typically within the context of warfare or enmity.

3.

To engage in a life-and-death confrontation with the intent to vanquish the opponent completely.