unexpected

In another episode, he unexpectedly unleashes a hilarious joke in a moment of darkness.

The buildings were immediately destroyed, together with a magazine, which was unexpectedly found in the adjoining village.

How can it be otherwise when we are thus suddenly and unexpectedly about to take leave of our dear friends the gorillas?

But when he found that he was too weak, he said: "Oh God, that I should be seized so unexpectedly."

In the waste places it is a pleasure to unexpectedly meet a fellow being.

He pictured, with a shudder, meeting her unexpectedly on the uncertain plank sidewalk of Fort Erie, he smoking a cigar.