What does "undergarment" mean?

Any garment worn underneath others, especially one worn next to the skin; an item of underwear.

What is a synonym for "undergarment"?

Common synonyms include: attire, base layer, bloomers, bras, brassieres, briefs.

Pronounced //ˌʌn.dɚˈɡɑɹ.mənt//.

/ˌʌn.dɚˈɡɑɹ.mənt/ noun

noun ·Moderate ·College level

Noun

1
Any garment worn underneath others, especially one worn next to the skin; an item of underwear.
"Richard DeLongpre: Are you okay, my boy angel? Allen Gregory DeLongpre: I have a broken heart. And undergarments filled with my own unruly waste."
2
a garment worn under other garments wordnet
3
Temple garments worn by the followers of the Church of Jesus Christ of Latter-day Saints. in-plural

"Santiago wanted to sleep with no undergarment."

From under- + garment.