1, 2. Slow, deliberate, gradual, leisurely mean unhurried and not happening rapidly. That which is slow acts or moves without haste or rapidity: a slow procession of cars. Deliberate implies the slowness that marks careful consideration before and while acting: a deliberate and calculating manner. Gradual suggests the slowness of something that advances one step at a time: a gradual improvement in service. That which is leisurely moves with the slowness allowed by ample time or the absence of pressure: an unhurried and leisurely stroll. 7. See dull.

Did you mean unsolder?