Most moons are not going to have much liquid surface. any close enough to do so are going to be evaporating away, since there won't be much of an atmosphere nor magnetic field to protect it. So one that is liquid to some depth will be constantly shrinking.

Titan has a lot of water, it is frozen on the outside, slowing evaporating, and it is theorized that the ocean floor has Ice VII from pressure. It also has a regular core that everything is floating around.

What constitutes Tidally locked? Tidal locking is the name given to the situation when an object's orbital period matches its rotational period

So it depends on what you measure. If you measure the core rotation, then it is easy to be tidally locked, though it might be hard to make that measurement. However, large bodies of water have currents and if you are measuring the surface or try to find some other fixed point, then no it's not possible.

Most moons are not going to have much liquid surface. any close enough to the sun to do so are going to be evaporating away, since there won't be much of an atmosphere nor magnetic field to protect it. So one that is liquid to some depth will be constantly shrinking.

Titan has a lot of water, it is frozen on the outside, slowing evaporating, and it is theorized that the ocean floor has Ice VII from pressure. It also has a regular core that everything is floating around.

What constitutes Tidally locked? Tidal locking is the name given to the situation when an object's orbital period matches its rotational period

So it depends on what you measure. If you measure the core rotation, then it is easy to be tidally locked, though it might be hard to make that measurement. However, large bodies of water have currents and if you are measuring the surface or try to find some other fixed point, then no it's not possible.