Intermediate (B1)
IPA: /ˌʌnɪnˈstrʌktɪv/
KK: /ʌnɪnˈstrʌktɪv/
Definition
Not providing useful information or guidance.
Example
The lecture was uninstructive, leaving the students confused about the topic.
Conversation

Did you find that tutorial helpful at all?

Not really, it was pretty uninstructive for me.

I felt the same way; it didn't explain anything clearly.

Exactly! I prefer when they break things down step by step.
Synonyms & Antonyms
Synonyms
unhelpful
uninformative
vague
Antonyms
educational
informative
enlightening
Root Explanation
Uninstructive → It is formed from "un-" (meaning not) and "instructive" (from Latin "instructivus", meaning providing instruction). The word "uninstructive" means not providing instruction or information.
Memory Tip
Think of 'not' ('un-') providing 'instruction' — that's why uninstructive means it doesn't give any helpful information.
Visually Confused Words
instructive
unconstructive
unobstructive
undestructive
instructively
preinstructive
nonobstructive
nondestructive