los
Masculine plural definitive in Spanish
eg. in Los Angeles
lost
Loss
less
lass
When the lads and the lasses to sheep shearing go~
Lassi 
lasso 
Hint(s)
classo (I classify, Italian)
Though Wiktionary suggests it might only be in Swiss Italian.
passo (footprint (et. al.), Italian)
Basso (italian road bike brand)
bass 
B-A-S-S spells “bass”.
@$$ 
Reminds of something I read in the Wikipedia article Murad Takla - Wikipedia, about bad romanisations of Bangladeshi.
Romanisation: gebonta pasa kala hoa gelo
Intended meaning: My life has become a dice game.
Literal meaning: My life is now like black ass.
sass
Apparently sassy comes from saucey.
Sams (german novel)
Cams
What’s up with all those 'C’s yall are putting up smh
rams 
hams
You see, I avoided crams 
Hamas
samas (grilled sago (palm stem), Indonesian)
Hint
sanas, a Romance word
Since acronyms are allowed
SaaS
Software as a service
Sars (severe accute respiratory syndrome)