Intermediate (B1)
IPA: /ˌʌnɪnˈstrʌktɪd/
KK: /ʌnɪnˈstrʌktɪd/
Definition
Not educated or informed; lacking knowledge or training.
Example
The uninstructed students struggled to understand the complex topic.
Conversation

I met a kid today who seemed really uninstructed about basic math.

Oh really? That’s surprising, especially at his age.

Yeah, I guess some kids just don’t get the support they need.

It's true — being uninstructed can really hold them back.
Synonyms & Antonyms
Synonyms
ignorant
uneducated
ill-informed
Antonyms
informed
educated
knowledgeable
Root Explanation
Uninstructed → It is formed from "un-" (meaning not) and "instructed" (from Latin "instruere", meaning to build up or prepare). The word "uninstructed" means not having been taught or prepared.
Memory Tip
Think of 'not' ('un-') having been 'built up' or 'prepared' ('instruere') — that's why uninstructed means not having received instruction.
Visually Confused Words
instructed
unconstructed
unobstructed
unmistrusted
undistrusted
undistracted
instructedly
instructer