no-slip
UK[ˌnəʊ ˈslɪp]US[ˌnoʊ ˈslɪp]
adj
Describing a condition or requirement that prevents slipping or relative motion.
n
A rule or guarantee that ensures something (e.g., a job, a service) is not lost or removed.
Morpheme Breakdown
no
slip
no
negation
slip
slide
Etymology
The compound "no-slip" is a modern English formation built from two native Germanic elements. The negative particle "no," with its ancient lineage in Proto-Indo-European negation, is prefixed to the verb "slip," which originates from a Germanic root conveying the concept of sliding or gliding. Literally meaning "not sliding," the term's logic is transparent, directly applying to physical contexts where motion is prevented. This concrete meaning was later extended metaphorically into administrative and service contexts, such as "no-slip" guarantees, where the concept of "not losing" something replaces the physical act of "not sliding."
Analysis
Structure: no (negation) + slip (slide)
no: From Old English 'nā', a compound of 'ne' (not) and 'ā' (ever). It functions as a negative particle or determiner.
slip: From Middle English 'slippen', likely from Middle Low German 'slippen'. It functions as a verb/noun root meaning to slide or lose one's footing.
Examples
The bathroom floor has a no-slip surface for safety.
The contract included a no-slip clause guaranteeing his employment for the project's duration.
In fluid dynamics, a no-slip condition assumes the fluid velocity at a solid boundary is zero.