List of multiple word prepositions

On behalf of all those present, may I thank you for a most interesting display of frog-juggling

along with

along with someone or something

in addition to someone or something; together with someone or something. Jane went to the mall along with David. I ate some chocolates along with some fruit.

on top of

1. Atop

2. (idiomatic) In addition to something else.

. . . and on top of all that, I got a puncture!

1. (idiomatic) Fully informed about, and in control of something; up to speed with.

I have sorted out the problems and am now on top of the situation.

as for

1. considering or speaking about I am still working, and as for my health, it is very good.

2. (slightly formal) and in the same way for For Hawthorne, as for Borges, his writing was a reaction to his cultural situation.

Usage notes: often used to start a sentence that changes or adds to the subject of the last sentence: My wife and I are well. As for our work, it is not going well.

at the expense of

with the loss of something Time is spent preparing students for state tests at the expense of other, important instruction.

for (the) sake of

for the purpose or benefit of someone or something; to satisfy the demands of someone or something. I made a meatless dinner for John's sake; he's a vegetarian. The teacher repeated the assignment for the sake of the slower students.

with/in regard to

concerning someone or something. What shall we do in regard to planning dinner? With regard to Bill, I think he is working too hard.

at variance with

different from or not agreeing with someone or something What she told the police was totally at variance with the truth. My opinions seem to be completely at variance with my friends' opinions.

in relation to

relating to someone or something; in connection with someone or something. I mention this fact in relation to your proposed trip. Let's discuss Bill in relation to his future with this company.