I've heard that Aramaic and Hebrew are similar languages in vocabulary, syntax, and structure. There is, however, some debate about which is the older, or original, base language. After a bit of searching, it looks like both languages came into use at around 1200 BCE. Do Jewish texts or rabbinic sources provide any further information about which of these languages is older and, perhaps, the original?
From the Ohr Somayach "Ask the Rabbi" site:
We do find that the Talmud in Sanhedrin 38b says that Adam spoke Aramaic. How does that reconcile with the above ? user @Curiouser based on sources offers the possible explanations:
1)That Adam spoke Aramaic after the sin, but not before.
2) Aramaic is a corrupted form of Hebrew, in which case still Hebrew was the only language, but Aramaic was the corrupted form spoken for secular purposes.
So it seems that Hebrew came before Aramaic.
I encourage you to look at other MY discussions similar to your question.
Bereshet 2:23, 3:20
Midrash Bereshet Rabbah 38