A circumfix is a morpheme that creates a new meaning by attaching to the front and back of a word.

It's difficult to remember new words.

He started working immediately to begin making a new project.

The time has come to start a new challenge.

An infix is a morpheme that is inserted inside a word.

Morphological analysis is the process of breaking down a sentence into morphemes.

Please infer the content of the blank from the context before and after the sentence.

He doesn't understand the situation in front and behind.

He accidentally inverted the order of the numbers.

Please tell me the meaning of this word.