1. most resembling thread; thinnest or most thread-like in appearance
Usage: superlative form of thready
2. most weak or barely perceptible
Usage: often used to describe pulse or voice

Examples

• The threadiest roots were barely visible to the naked eye.
• Her voice became threadiest when she was extremely tired.
• The doctor noted the patient’s threadiest pulse during the examination.
• Among all the fibers, this was the threadiest and most delicate.
• The threadiest branches swayed in the slightest breeze.
• His threadiest excuse failed to convince anyone.