Morpheme
Bus
Type
free base
Denotation
large public street vehicle
Etymology
clip of omnibus, from French omnibus; Latin omnibus, from omnis + -bus
Evidence
airbus, bus, busable, busboy, bused, buses, busful, busgirl, busing, busless, buslike, busload, busmate, bussed, busser, busses, bussick, bussing, metrobus, minibus, superbus, waterbus
Notes
<s> need not double (but can), especially with inflectional suffixes
