Definition

To block or make it difficult for something to pass or move forward.

Example

The fallen tree obstructed the road, making it hard for cars to get through.

Tense Forms

Conversation

I think the construction workers are going to obstruct the road again.

Really? That’s so annoying, I was hoping to get home quickly.

Yeah, it always seems to happen when you're in a hurry.

I know, right? It's like they enjoy making our lives difficult.

Synonyms & Antonyms

Root Explanation

Obstruct is formed from "ob-" (meaning against) and "struere" (meaning to build). The word describes the act of building something against a path or flow, thereby blocking it.

Memory Tip

Think of something being built 'against' ('ob-') a path or flow ('struere') — that's why obstruct means to block or hinder.

Visually Confused Words