at that see under that

get someone at it

To make someone excited, worked up or agitated

where it's at see under where

that /dhat/

demonstrative pronoun and demonstrative adj (pl those)

1. Used in pointing out a person or thing
2. Indicating the thing, person, idea, event, etc (already) mentioned, specified or understood
3. The former (of two)
4. The more distant, removed or less obvious (of two)
5. Not this but the other (as in contrast)
6. The one to be indicated or defined
7. The person spoken to on the telephone
8. Such (obsolete)
9. Often indicating an accompanying snap of the fingers (as I don't care that, It wants that)

relative pronoun (sing and pl) /dhət, dhat/

Who, whom, or which (esp when defining or limiting, not merely linking on an addition)

adverb /dhat/

1. To the degree or extent shown or understood
2. At which (often omitted)
3. To such a degree or extent, so (informal or dialect)

conjunction /dhət, dhat/

1. Used to introduce a noun clause, an adverbial clause showing purpose, reason, result or consequence, or an expression of a wish in the subjunctive
2. Because (Shakespeare)

thatˈaway adverb (N American dialect, or facetious)

1. In that direction
2. In that way

thatˈness noun

The quality of being a definite thing, that

all that (informal)

(usu with a negative) very

and (all) that (informal)

And all the rest of that sort of thing, used as a summary way of dismissing what is vaguely thought of

(and) that's that

1. (and) that is the end of that matter
2. No more of that

at that

1. At that point
2. Moreover (informal)
3. Nevertheless (informal)

(just) like that

1. Straight away, without effort
2. Without further ado

that's more like it

That is better, that is more like what is required