Definitions

1. adjective

having no thumb, especially as a result of an injury or birth defect

“The little girl was born thumbless and had to learn how to adapt her grip.”

2. adjective

lacking a thumb, especially in a figurative sense

“The new policy made the company’s operation thumbless, relying heavily on automated systems.”

3. adverb

in a way that is characterized by the absence of a thumb

“The surgeon worked thumbless to minimize the risk of nerve damage.”