Peccadillo is a noun that means small or minor fault

Unclog is a transitive verb that means to free something from difficulties or obstruction

The word painstaking is an adjective that means something involves dilligent care and effort

Silver bullet is a noun that means something that acts as a magical weapon

Obfuscate is a verb that means to make something obscure

Renegade is a noun and is also used as an adjective, that means someone who shifts his allegiance to another

Make is a phrasal verb that means to settle or to compensate

Strenuous is an adjective that means something that needs considerable physical and mental effort

Keep one's powder dry means to be ready for a possible problem in future

Sine qua non is a noun that means something is crucial or necessary