Definition of loyal
1
: unswerving in allegiance: such as
a
: faithful in allegiance to one's lawful sovereign or government
were loyal to the king
b
: faithful to a private person to whom faithfulness is due
a loyal husband
c
: faithful to a cause, ideal, custom, institution, or product
a loyal churchgoer loyal to the party of their forebears— Dennis Farney
2
: showing loyalty
a loyal friend
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Merriam-Webster unabridged
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Time Traveler for loyal
The first known use of loyal was in 1531
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