unprompted

Whether or not he actually did confess unprompted remains in doubt.

King also made an unprompted defense of those statements saying Iowans were "universal in their support" for him.

Later, Rep. Louie Gohmert, a fellow Texas Republican, jumped, unprompted, to Paul's defense.

When was the last time you heard him speak unprompted about abortion or gay rights or gun control?

Certainly her excellent father would have been the last unprompted and of his own motion, to develop any such suspicion.

Its very address is so far above that of man, that no mortal, unprompted, could ever have risen to it.

As Lady Ashburton was one of her dearest friends, this condition was probably not unprompted.

"It's a cinch I can't use it Out There," he chuckled ruefully and unprompted.

Unprompted by any voice of authority, unconstrained by any command of power, we join in the wide-ranging demonstration.