purposefully
adv.to do something in a way that shows you have a clear plan or reason. You act this way when you want to achieve a specific goal.
adv.in a way that shows determination or a clear intent. Often describes physical movement or actions performed with a specific objective in mind.
“She walked purposefully toward the stage to give her speech.”
“The investigator purposefully left the room to see how the suspect would react when alone.”
“The architect purposefully designed the atrium to maximize natural light, ensuring that the building remained energy-efficient throughout the winter months.”
Typically follows the verb it modifies or appears at the end of the clause.
While 'purposely' means 'on purpose' (not by accident), 'purposefully' suggests doing something with a sense of mission or determination.
“Manchester City started the summer window purposefully, swiftly agreeing a £116m deal for England midfielder Elliot Anderson, but they have yet to back that move up with other first-team signings.”
“There are purposefully designed indoor and outdoor play spaces and equipment.”
From purposeful + -ly.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.