undetectable
Meaning
not able to be discovered or found.
not able to be perceived or noticed.
Structure
Usage
the spy used a sophisticated encryption method to make the message undetectable.
the virus can be present in the body for years while remaining undetectable by standard tests.
the chemical is odorless and undetectable to human senses.
Etymology
The word 'undetectable' is a Modern English formation built from established morphemes. Its core, 'detect', originates from the Latin verb 'detegere', meaning 'to uncover' or 'to expose', which itself is composed of 'de-' (off, away) and 'tegere' (to cover). The suffix '-able', of Latin origin, was added to form the adjective 'detectable', meaning 'capable of being uncovered or discovered'. Finally, the Old English negative prefix 'un-' was prefixed to create the current meaning of 'not capable of being discovered'. The word's logical construction perfectly mirrors its modern abstract sense, describing something that cannot be found or perceived.
Analysis
un- (old english, a prefix meaning 'not'), detect (from latin 'detectus', past participle of 'detegere' meaning 'to uncover'), -able (from latin '-abilis', a suffix forming adjectives meaning 'capable of, fit for').