I. interjection
or good-by gu̇dˈbī, gədˈbī, gəˈbī, ˈbī
Etymology: contraction of God be with you
— used conventionally as a concluding utterance at parting or often at closing a telephone conversation
II. noun
or good-by gu̇dˈbī, gəd-, attrib “ or ˈgu̇dˌbī
( plural good-byes or good-bys )
Usage: often attributive
1.
a. : a concluding remark at parting
said good-bye
the chorus of good-byes — David Wagoner
b. : a farewell gesture
tearfully waving good-bye to a knot of friends — Winston Churchill
nodding a casual good-bye — J.D.Beresford
a good-bye kiss
2.
a. : a taking of leave
in wartime one can't afford emotional good-byes — Edita Morris
kissed her grandmother in good-bye — Betty Smith
b. : a riddance to something left behind or finished with
good-bye to all that
good-bye to noisy blasts — Boy Scout Handbook
the year to which we have just said good-bye — Harrison Smith