We don't have synonyms for liters yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are liter, ligers and kiters.
(n) :
(American spelling) Alternative form of litre, one cubic decimeter. [The metric unit of fluid measure, equal to one cubic decimetre. Symbol: L, l, or ℓ.]
(n) :
(obsolete) Alternative form of litter. [(uncountable) Straw, grass, and similar loose material used as bedding for people or animals.]
(n) :
(American spelling) Alternative form of litre, one cubic decimeter. [The metric unit of fluid measure, equal to one cubic decimetre. Symbol: L, l, or ℓ.]
(n) :
(obsolete) Alternative form of litter. [(uncountable) Straw, grass, and similar loose material used as bedding for people or animals.]