Obscured by mist or fog; unclear; hazy / (figuratively) Confused, befuddled, etc. / Being, covered with, or pertaining to fog (“tall grass etc that grows after, or is left after, cutting; moss”)

The characteristic or quality of being foggy

plural of fogginess

A neighborhood of Washington, D.C., United States. / (US, by extension) The United States Department of State, whose headquarters are nearby.