'anti-spectroscopic' originates from Modern English, specifically formed by the prefix 'anti-' (from Greek 'antí') meaning 'against' and the adjective 'spectroscopic' (from 'spectroscopy' + suffix '-ic'), where 'spectroscopy' ultimately derives from Greek 'spektros'/'skopein' via New Latin meaning 'to look' or 'appearance'.

'anti-spectroscopic' arose as a compound in technical and scientific English in the 20th century by combining 'anti-' + 'spectroscopic' and has been used in specialist texts to describe opposition to or absence of spectroscopic response.

Initially it meant simply 'against spectroscopy' (i.e., opposed to the technique), but over time it has been used more specifically to denote materials or behaviors that are not detectable by or that avoid spectroscopic analysis.