まっさきに
Meanings
Adverb
1. at the very beginning; first of all; first and foremost; before anything else
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Composed of
the head; the foremost; beginning; the very front
Composed of
just; right; pure; genuine; truth
previously; before; first; before (something or someone else); beforehand; in advance
Examples (4 in total)
Tom arrived first.
When an earthquake occurs, what will you do first?
Kenji is always the first to come to school.
The boy told his mother about it first of all when he got home.