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first‧ly S2
[sentence adverb]
[sentence adverb]
Firstly, I would like to thank everyone who has contributed to this success. ➔ see usage note first2WORD CHOICE: 
first, first of all, firstly, at firstUse first, first of all, or firstly to introduce the first item in a list of two or more points, instructions etc • First, make sure the screws are securely fixed in position. Then attach the wire. • The plan was not practical, firstly because of the cost, and secondly because local people did not support it.Use first or first of all to say what happens first in a series of actions • First I fed the baby. Then I made myself a sandwich.Use at first to say what happened at the beginning of a period of time, when this changed later • At first I was nervous, but I soon started to relax. ➔ See also first

first, first of all, firstly, at firstUse first, first of all, or firstly to introduce the first item in a list of two or more points, instructions etc • First, make sure the screws are securely fixed in position. Then attach the wire. • The plan was not practical, firstly because of the cost, and secondly because local people did not support it.Use first or first of all to say what happens first in a series of actions • First I fed the baby. Then I made myself a sandwich.Use at first to say what happened at the beginning of a period of time, when this changed later • At first I was nervous, but I soon started to relax. ➔ See also first
