Search for photos that have NO keywords

I want to find photos that I have not assigned keywords to (untagged / unlabeled). Is there null / empty option in Search?

Welcome to the forum, @mjhinton.

Don’t forget to vote for your feature request.

Short term for NEW pix: I’m adding to all new pix the Keyword β€œ[none]” (the brackets cause it to sort to the top of the Keyword list – I like to see the running count). It will be easy to find [none]. This does not help me with older pix.