Does the name Frisk mean anything?
In Undertale, the names behind character usually have a meaning behind them. For example, Toriel is supposed to be like a Tutorial, or Sans and the font.
Does the name Frisk have a meaning behind it?
From the Undertale wiki:
Depending on the ending that the player is moving towards, Frisk can be depicted as friendly or cold. In the Pacifist Ending, characters such as Asriel make an emphasized note about Frisk's kindness, understanding, and grace. This is also the only ending when Frisk's name is given, which implies that this is their true character and personality.
And from the definition of the name:
To "Frisk" means to skip or leap playfully, or to pat down on someone, looking for a hidden item. "Frisk" is the Swedish and Norwegian word for "healthy", and the Danish word for "fresh." "Frisky" means "playful and full of energy."
Thus, Frisk's true personality is that of a kind/playful person who's healthy/full of energy.