merry

merry /ˈmeri/ adjective
merrier; merriest
merry
/ˈmeri/
adjective
merrier; merriest
Britannica Dictionary definition of MERRY
somewhat old-fashioned
1 
: very happy and cheerful : feeling or showing joy and happiness
2 

go on your merry way

1 
or be on your merry way : to leave a place
2 
often disapproving : to continue doing what you have been doing

lead (someone) a merry chase/dance

— see 1lead

make merry

old-fashioned
: to have fun and enjoy yourself by eating, drinking, dancing, etc.

Merry Christmas

— used to wish someone an enjoyable Christmas holiday

the more the merrier

— used to say that more people are welcome or invited to do something

— merriness

/ˈmerinəs/ noun [noncount]