What Does Tugless Mean?

: not having a tug a tugless harness.

What does Unrelieving mean?

Adjective. unrelieving (comparative more unrelieving, superlative most unrelieving) From which there is no relief; unrelenting. an unrelieving rainstorm.

What is the meaning of Thumbled?

Thumble. (verb) To move an object back and forth using the thumb; to fumble with an object subconsciously while at the same time thinking about something; to think, thumb, and fumble any object, esp. a computer mouse. I thumbled with the mouse, trying to decide whether to answer the insulting question.