All as for synonyms

prep as for

• concerning — You use concerning to indicate what a question or piece of information is about.
• for — for loop
• anent — lying against; alongside
• in re — in the matter of.
• re — regular expression
• about — You use about to introduce who or what something relates to or concerns.
• against — If one thing is leaning or pressing against another, it is touching it.
• concerning — You use concerning to indicate what a question or piece of information is about.
• regarding — with regard to; respecting; concerning: He said nothing regarding the lost watch.
• respecting — regarding; concerning.
• touching — affecting; moving; pathetic: a touching scene of farewell.
• toward — in the direction of: to walk toward the river.
• as regards — You can use as regards to indicate the subject that is being talked or written about.
• as to — with reference to
• apropos — Something which is apropos, or apropos of, a subject or event, is connected with it or relevant to it.