Definition

Not based on sound reasoning or logic; lacking validity or reliability.

Example

The unsounder arguments presented in the debate failed to convince the audience.

Comparatives & Superlatives

Conversation

Have you noticed how the new plan seems even more unsounder than the last one?

Yeah, it really doesn't make much sense at all.

I think we should suggest some changes before it's too late.

Definitely! We can't let them go forward with such an unsounder idea.

Synonyms & Antonyms

Root Explanation

Unsounder → It is formed from "un-" (meaning not) and "sound" (from Old English "sund", meaning healthy or safe) and the suffix "-er" (meaning a person who). The word "unsounder" refers to a person who is not sound or healthy, often in a moral or logical sense.

Memory Tip

Think of someone who is 'not' ('un-') healthy or safe ('sound') — that's why an unsounder is someone who lacks soundness.

Visually Confused Words