13-Letter Words Containing: _,E,F,L,S,T,U

• the conversion of a solid or a gas into a liquid

• incapable of being justified or explained

• vigorous and enthusiastic enjoyment

• one of the four competitions in an elimination tournament whose winners go on to play in the semifinals

• the quality of being frightful

• confusion resulting from failure to understand

• the quality of promoting good health

• the quality of requiring deliberate effort

• The frictionless flow that is characteristic of a fluid with zero viscosity, especially liquid helium at temperatures near absolute zero.