Antonyms for after-thought

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR AFTER-THOUGHT

Soon, as by an after-thought, he asked me to have a mass said for the repose of his soul.

It is the after-thought of his lordship of which I have to complain.

"And when one has nothing to lose," he added, as an after-thought.

But the truth is that Milton's classification is an after-thought.

And it certainly has much the appearance of an after-thought.

Then, as an after-thought, “and I want to say the same thing for myself.”

Then added as an after-thought, “and so are the other boys.”

I, you understand, was only an after-thought consequent upon his success.

Something pleased you, then brought an after-thought that was sad.

Then, as an after-thought, he said: By the way, where is Jack?