much, many, more than, over
夛 centers on abundance: a large amount, many things, or exceeding a norm. The meanings "much," "many," "more than," and "over" all express this idea of quantity beyond the usual.
夛 is a variant form of 多, which originally depicted two pieces of meat (夕) stacked to represent abundance. The top component 彐 in 夛 is a graphical variation that developed later.
Picture a pile of evening meals (夕) stacked high, with a hand (彐) on top trying to hold them all—there is so much food, more than enough.
For タ, imagine a towering stack of many things, and you say "Ta-da!" as you reveal the huge pile: "Ta" cues タ.