suds

From the plural of sud, a variant of sod (“a bubbling or boiling”), equivalent to sud +‎ -s. Related to seethe.

suds pl (normally plural, singular sud)

(countable, uncountable) Lather; foam or froth formed by mixing soap and water.
- 1891, Thomas Hardy, Tess of the d'Urbervilles, volume 1, London: James R. Osgood, McIlvaine and Co., page 30:
  Mrs Durbeyfield, excited by her song, trod the rocker with all the spring that was left in her after a long day's seething in the suds.
(slang) Beer.
We went out for some pizza and suds.

Sometimes treated as uncountable ("too much suds") and sometimes as plural ("too many suds").

lather, foam

Arabic: رَغْوَة (raḡwa)
Armenian: սապնափրփուր (hy) (sapnapʻrpʻur), օճառափրփուր (hy) (ōčaṙapʻrpʻur), փրփուր (hy) (pʻrpʻur)
Basque: please add this translation if you can
Bikol Central: subo (bcl)
Bulgarian: сапунена пяна (sapunena pjana)
Catalan: sabonera (ca) f
Chinese:
Mandarin: 泡沫 (zh) (pàomò), 沫 (zh) (mò)
Czech: mýdlová pěna f, mydliny f pl
Dutch: sop (nl) n
Esperanto: please add this translation if you can
Finnish: vaahto (fi)
French: mousse de savon, eau savonneuse
Georgian: საპნის ქაფი (saṗnis kapi)
German: Seifenlauge (de), Schaum (de)
Greek: σαπουνάδα (el) f (sapounáda)
Hebrew: קֶצֶף סַבּוֹן
Hindi: साबुन का झाग (sābun kā jhāg)
Hungarian: szappanhab (hu)
Irish: sobal m
Italian: saponata f, schiuma (it) f
Japanese: 泡 (ja) (awa)
Korean: 비눗물 (ko) (binunmul)
Latin: spūma f
Mongolian:
Cyrillic: хөөс (mn) (xöös)

Mongolian: ᠬᠥᠭᠡᠰᠦ (kögesü)
Ottoman Turkish: كوپوك (köpük)
Polish: mydliny (pl) nvir
Portuguese: espuma (pt) f
Russian: мы́льная пе́на f (mýlʹnaja péna)
Spanish: espuma (es) f
Swedish: lödder (sv)
Thai: ฟอง (th) (fɔɔng), ฟองฟอด (fong fôt)
Turkish: köpük (tr)
Welsh: ewyn (cy) m
Yakut: мыыла күүгэнэ (mııla küügene)

suds (third-person singular simple present sudses, present participle sudsing, simple past and past participle sudsed)

(transitive) To cover with, or as if with, soapsuds.
We sudsed the car before washing it down until it gleamed like new.

English