instructive
UK[ɪnˈstrʌktɪv]US[ɪnˈstrʌktɪv]
adj
providing useful information or a good example to learn from
Morpheme Breakdown
in
struct
ive
in
in, into, upon
struct
ive
Etymology
the word 'instructive' has a clear architectural metaphor at its core. it derives from the latin verb 'instruere', meaning 'to build in, to equip, to teach', which itself is a compound of the intensive prefix 'in-' and 'struere', meaning 'to pile up, to build'. the underlying logic is that teaching is akin to building knowledge or character within someone. the latin past participle 'instructus' gave rise to the english verb 'instruct'. the adjective 'instructive' was formed in english by adding the productive suffix '-ive' to the root, shifting the meaning to 'serving to instruct or build up knowledge'. thus, the modern sense of providing useful information retains the original idea of constructing understanding.
Analysis
Structure: in + struct + ive
- in (sense: in, into, upon): latin prefix, from latin 'in-', meaning 'in, into, upon'. in this word, it acts as an intensifying prefix.
- struct (sense: to build, to pile up): latin root, from latin 'struere', meaning 'to build, to pile up'. it is the core root conveying the sense of construction.
- ive (sense: adjective-forming suffix): latin suffix, from latin '-ivus', used to form adjectives meaning 'tending to, having the nature of'.
Examples
the documentary was highly instructive about life in the antarctic.
i found his criticism constructive and instructive for my future work.
it is instructive to compare how different cultures approach this problem.