You can still use the term, I like it too.
A contemporary usage of “widdershins” that I’ve heard refers to being mixed up, confused, disoriented. Specifically, being in a state of mind when one is prone to make mistakes that he or she wouldn’t normally make. It’s kind of similar to the term “at 6’s and 7’s”.
e.g. I hope this post turns out o.k. Sometimes I get all widdershins when I have to do a lot of coding.
This isn’t a very commonly used term though. Dictionary dot com only lists the “counterclockwise” definition. M-W gives “in a left-handed, wrong, or contrary direction” which is the closest I’ve found to an online cite for the definition I have provided.
I personally like the word an use it from time to time in the context I described. But I don’t use it often since I usually end up having to explain it as it is not a very commonly used term.
Wiki notes that going widdershins has traditionally been considered unlucky.
Wiccan/Pagan traditions* use a clockwise (deosil) direction for ritual maintaining the tradition that widdershins is wrong, unlucky, bad, whatever. Widdershins would be used for destructive, negative spell-casting. (Although some practitioners find it appropriate to close a ritual with widdershins movement, the ritual having been opened with a deosil movement. Also, some southern hemisphere practitioners apply their usage of deosil and widdershins according to the clock-wise/counterclock-wise direction originally set in the northern hemisphere while others observe the direction of the sun from their own perspective, thus reversing the direction.) (scroll down for cite)
*It has often been pointed out on this board that modern Wicca is a modern development and is only distanly related to European witchcraft and paganism of pre-Christian times. For point of clarification I’ll point out that my own personal research on the term “widdershins” does not delve any earlier than the twentieth century.