Adjective
Capable of being opposed or resisted.
Capable of being placed opposite something else; as, the thumb is opposable to the forefinger.
Source: Webster's dictionaryDinosaurs are extinct today because they lacked opposable thumbs and the brainpower to build a space program. Neil deGrasse Tyson
Sometimes I think opposable thumbs were invented so teenage girls could use text messaging. Diane Lane
Can you take human form in daylight? (Talon) Obviously so. Ever tried to answer a phone without opposable thumbs? (Vane) Sherrilyn Kenyon
If cats understood technology and had opposable thumbs, they'd rule the world. P. C. Cast
the thumb is opposable to the forefinger Source: Internet
Both its thumbs and big toes are opposable, allowing a precise grip. Source: Internet