When I get interviews for jobs, there's typically 1 language/tool out of the job requirements that i don't have professional experience working with. Languages such as Java, C, Visual and Basic, tools such as Nant and protocols such as HTTP/HTTPS, DNS, SMTP are technologies that are familiar but not too experienced.
I'm tired of saying that "I am familiar with X technology". Is there a better way to say I don't have a particular skill?