noun, noun or participle which takes 'suru', intransitive verb
long silence; not being in touch; neglecting to contact
Polite expression used to apologize for a long period without communication, or to describe such a state. Often used in greetings like ご無沙汰しております.
See also: 無沙汰
ご無沙汰しておりますが、お元気ですか。
It's been a long time since I last contacted you; how have you been?
友人とご無沙汰になってしまった。
I've fallen out of touch with my friend.