"He's not going to build any weapons himself," the engineer said in a conspiratorial tone.

The latter was said while leaning forward with an almost conspiratorial tone.

In a quiet, conspiratorial tone, he said, 'I'll trade you.

He could hear their distant voices, speaking in low, conspiratorial tones.

"I'm going to trust you with a secret," said Green in a conspiratorial tone.

"You've heard of the flesh and the spirit," he explained in an almost conspiratorial tone.

Paul broke into my reverie in a low, conspiratorial tone.

He leaned over and whispered the last bit in conspiratorial tones.

It was now Sue's turn to lean forward and lower her voice in a conspiratorial tone.

She dropped her voice to a more conspiratorial tone.