Never
At no time
Synonyms At no time, not ever, on no occasion, not at any time, not once, and ne'er.
Not at all
Synonyms Not at all, not for a moment, under/in no circumstances, no way, not in a million years, not on your nelly, certainly not, not under/in any circumstances, on no account, not on your life, and not for love or money.
Example Sentences
I will never forget that amazing day.
He never learned how to ride bikes.
We never expected such a huge turnout.
You should never lie to your friends.