モアイの謎の英語

a fathomless mystery

to put a puzzle to one―propose a riddle to one

to take the hint

speak in riddles

explain a riddle

a person who keeps his thoughts secret

My hints were lost upon him.

He is an enigmatical person―an enigma―a sphinx.

to solve a puzzle―answer a puzzle

I know what you would be at.

a paradoxical anecdote or a riddle that has no solution

At last I have solved the puzzle.

a Japanese 'waka' poem that includes a riddle

The mystery continues to deepen.

I am mysterious.

how it got out is a mystery

I will give you a puzzle to guess.

It is an enigmatical story―an enigma.

the syllabic 'nl' in 'riddle'

Don't leave the riddle.

to drop a hint―let fall a hint―throw out a hint

My hints were lost upon him.

He did not take the hint

the mysterious presence of an evil power

I can't figure out how to solve the puzzle.

Let's try to solve the riddle.

the key to a mystery [riddle]

All of the mystery has been solved.

an unidentified person who commits mysterious actions

an inscrutable person who keeps his thoughts and intentions secret