quaternary
2 synonyms for quaternary, grouped by meaning and by how common each one is.
Adj — Fourth in order or rank.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Etymology
Derived from Latin quaternārius (“containing or consisting of four”), from quaternī (“four each”, “four at a time”) plus -ārius (which gives the English suffix -ary); compare French quaternaire.
Full origin of quaternary →