“At this stage, I am not able to provide a specific of any sort for this case.”
“The two cabinets look similar but differ in one identifiable specific, and that is the type of wood used.”
“He suffered from an ailment for which there was no specific.”
specificker
(pejorative) A homoeopathic practitioner who sought to ascertain the aetiologies of diseases, focusing on the symptoms most regularly associated with their diagnosis (to the exclusion of peripheral and occasional symptoms), and who, for their treatment, selected remedies (administered in more-or-less undiluted form) on the basis of their general physiological effects, ignoring incidental and side-effects. [mid- to late-19th c., first attested in 1847 and common in the 1860s.]