As a means, aiming to, and as a means to are all synonyms for that. Which and this are antonyms of that. And here are 58 another word for that.
Aiming to, as a means to, as a means, as a mechanism, as a way to, as a way, as, because, because, considering, for the purpose of, for to, for, given, in an attempt to, in an effort to, in order for, in order for, in order that, in order that, in order to achieve, in order to, in such a manner that, in such a manner, in such a way that, intending to, since, so as to achieve, so as to, so as, so that, so that, so, such that, such that, that it would be possible to, that one may, that one might, to such an extent that, to such an extent, to, with a focus on, with a view to, with an eye on, with an eye to, with an eye toward, with the aim of, with the aim that, with the intent that, with the intention of, with the intention that, with the object of, with the purpose of, with the purpose that, with the result that, with the result, and as a method are all synonyms for that.
That synonym page has a variety of synonyms that differ in length. 3 synonyms with 2, 5, 14, 15, 17, and 18 letters and 1 synonym with 3, 4, 9, 20, and 23 letters. 4 synonyms with 6, 10, and 13 letters and 2 synonyms with 7, and 16 letters.
5 synonyms with 8, and 12 letters and 7 synonyms with 11 letters. For a total of 56 another word for that.
She said that he would arrive soon.
I believe that we can achieve this.
They know that it is a problem.
He thinks that she might be right.