Top Definition
Emphatically exhibits the sincerity of your seriousness. The classic use is to close a letter with it.
Dear Urban Dictionary:


Thank you in advance for considering “sinseriously” in your Urban Dictionary.

Were sinseriously to be included in The Urban Dictionary, that would make my day, perhaps even my week.

Sinseriously,
Cyprus Denton Fekks
#sincere #serious #valediction #sincerity #seriousness
Cyprus Denton Fekks가 작성 2010년 02월 19일 (금)
To be sincere and serious at the same time.
"Dude, sinseriously, im sorry"
#sincerely #seriously #actually #genuinely #honestly
LilRayRay가 작성 2008년 07월 24일 (목)
"sinseriously" is a super fun loving word that can be used to sign a card with. It is a great way to let someone know how much you care about them and that you are serious and sincere about everything you wrote on a letter. It is a cherry on top.
Thanks for being my friend and i hope you enjoy your present

"Sinseriously", Joe
#synonyms: serious #loving #and thoughtful antonyms: false #mocking #and unkind
valkayerie가 작성 2011년 07월 09일 (토)
Being seriously sincere. Sincere & serious about it.
girl: are you serious? guy: Sinseriously !
Berjmaster가 작성 2015년 11월 27일 (금)
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