Definition

To break down or decay slowly, often due to the effects of moisture or time.

Example

The old bread began to moulder in the damp kitchen.

Tense Forms

Conversation

Did you see how the old building is starting to moulder away?

Yeah, it's a shame to see it like that after all those years.

I wonder how long it will take before it's completely gone.

Hopefully, they'll do something to preserve it before it completely moulders.

Synonyms & Antonyms

Root Explanation

Moulder → It originates from Old English 'muldrian' (meaning to crumble or decay), which is related to 'mold' (meaning to shape or form). The word 'moulder' refers to the process of something crumbling or decaying, often in a way that shapes or forms it.

Memory Tip

Think of something that is 'decaying' or 'crumbling' — that's what moulder means, as it relates to the process of shaping through decay.

Visually Confused Words