The phrase "a topic so" is correct and usable in written English.
It can be used to introduce a subject that is being emphasized or described in a particular way.
Example: "It was a topic so controversial that it sparked heated debates among the audience."
Alternatives: "a subject so" or "an issue so".
Who cares about a topic so thoroughly short on sex appeal?
Some of these students may feel relieved to discuss a topic so relevant to their lives, while others may feel embarrassed.
In the latest volume of David Kamp's snob dictionary series (Kamp works with a variety of co-authors; in this case, David Lynch), the author takes on wine, a topic so ferociously snobbish that it almost parodies itself.
For a White House and a re-election campaign that is known for its painstaking planning and strategic thinking, the rollout of Mr. Obama's position on same-sex marriage came swiftly, particularly on a topic so fraught with political peril.
Carry On. "Designers are not necessarily supposed to filter what's happening socially," Rick Owens noted before his show on Thursday, referring indirectly to the economy, a topic so toxic that more superstitious types consider its very mention taboo.
Actually, the poems here about sex ("Sex and Poetry," "The Pond of Desires") are better than the ones about love, a topic so daunting it requires an indirect approach.
Education is quite a subjective topic, so a good rule of thumb to use when considering your internship program is to ask whether it acts as an extension of the classroom.
Madonna's infamous smooch with Britney Spears at the 2003 Video Music Awards was a hot topic, so to speak, but no network blackballed them as a result.
"People are engaged and looking for a specific topic, so it's relevant".
We recommend choosing a single topic so that students can later compare their recollections and interpretations.
Their correspondence arrives in subscribers' inboxes every Monday for 20 weeks, grouped around a single topic; so far, they've dealt with money and advice.
