What part of speech is undertone?

Undertone can be categorized as a noun.

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Parts of speech

Inflections

Noun

What does undertone mean?

Definitions

Noun

undertone - a pale or subdued color
undertone - a subdued emotional quality underlying an utterance; implicit meaning
undertone - a quiet or hushed tone of voice; "spoke in undertones"

Examples of undertone

#   Sentence  
1. noun I don't like the apologetic undertone of this article.
2. noun There was a pervasive nasty undertone in their writings.
Sentence  
noun
I don't like the apologetic undertone of this article.
There was a pervasive nasty undertone in their writings.

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