Conduplicate: Folded lengthwise
Eg. The leaves are conduplicate as in Magnolia.
Incomprehensibilities: Impossible to comprehend
Eg. Her explanations had so many incomprehensibilities about them and were rejected by all.
Proficuous: Profitable; advantageous
Eg. After doing many small roles, Sanjeev got proficuous roles as a character actor in many films.
Sesquipedalian: One who uses big words
Eg. The English professor was a sesquipedalian who surprised his students with his interesting vocabulary.
Nidificate: To nest
Eg. Some of the protected species of birds nidificate on the island.