most rigid
The superlative form of the word "rigid" is "most rigid." This form is used to describe something that is the least flexible or most stiff among a group. In comparative contexts, you might also encounter "rigidest," though it is less commonly used.
the superlative form for movingly in most movingly
The superlative form of ancient is ancientosity
The superlative form of clean is "cleanest".
The superlative form of clean is "cleanest".
comparative - merrier superlative - merriest
The comparative form of cloudy is "cloudier". The superlative form is "cloudiest".
The superlative form of genuine is more genuine.
"Older" is the comparative form of old. The superlative form is oldest.
The superlative form of sorrowfully is most sorrowfully.
The superlative form of "softly" is "softest."
The superlative form of "busy" is "busiest."