Not clearly expressed or stated

• Lacking precise meaning or detail
• Hard to understand or interpret

Not sharply outlined; hazy or blurred

• Slight or faint in sensation or memory

Not thinking or speaking clearly

• Lacking expression; blank or absent-minded

Archaic: a wandering or unpredictable notion

• Literary: an indefinite expanse

Colloquial: to zone out or act absent-mindedly

• Colloquial: to make veiled public complaints or insults
• Rare: to wander or stray