"welcomer" in the noun sense
1. greeter, saluter, welcomer
a person who greets
"the newcomers were met by smiling greeters"
"welcomer" in the adjective sense
1. welcome
giving pleasure or satisfaction or received with pleasure or freely granted
"a welcome relief"
"a welcome guest"
"made the children feel welcome"
"you are welcome to join us"
Source: WordNet® (An amazing lexical database of English)
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