Get Grammar: On the use of regards, regard, regarding

The correct form is “in regard to” or “with regard to”–both without the ‘s’. For expediency, we replace 3 words with 1 and prefer to say “regarding (something)”. We can give or send our “regards” to someone, hence the greeting “Best regards” or the movie “Give my regards to Broadway”. We also use “in this regard” to mean “in relation to [this particular point]”.