DictionaryRoot: -er
English
-er
a person or thing that does something
Forms
- -er
- -r — Used after some bases ending in e.
Origin
Old English -ere, generally traced through Germanic to Latin -arius.
Note
It can name a tool as readily as a person. The comparison ending in taller has a different history.
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noun
binder
An agreement providing temporary insurance coverage.
Etymology
Binding can mean making an obligation effective. An insurance binder does that temporarily, establishing coverage while the full policy is being prepared.