Glossary entry (derived from question below)
English term or phrase:
Meaningful appreciation
Portuguese translation:
Agradecimento importante
English term
Meaningful appreciation
Creating a recognition culture
***Meaningful appreciation***
Thanks for today
It was great to see you complete (X task) today. The quality of your work was really high which requires great attention to detail and really helps to enhance our reputation with the (customers/stakeholders).
Great job
Your focus and concentration have been fantastic today despite the interruptions, and it’s meant that you achieved everything you set out to. Well done.
Obrigado!
Proposed translations
Will do!
Native in: Portuguese (Variant: European/Portugal) 
Works in: English to Portuguese, French to Portuguese, German to Portuguese, and 1 more.
Agradecimento importante
Appreciation:
https://www.merriam-webster.com/dictionary/appreciation
https://www.google.com/search?q="agradecimento importante"&o...
Um agradecimento importante vai também para quatro professores, a Prof. Dra. Vera Monteiro, Mestre Rui Bártolo, Prof. Dra. Teresa D'Oliveira
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Paulinho Fonseca
5 hrs
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Muito obrigada, Paulinho!
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Leandro Brandão
1 day 11 hrs
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Muito obrigada, Leandro!
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Maria Teresa Borges de Almeida
3 days 8 hrs
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Obrigada, Teresa!
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Lucas Rodrigues Oliveira
4 days
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Obrigada, Lucas!
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Brazil
Digital Marketing & Game Localization.
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese
Reconhecimento profissional
Translations by lawyers for lawyers
Native in: English 
Works in: Portuguese to English, English
apreço pertinente
Netherlands
Science, Biotech, Health, Technical, Env
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
significante reconhecimento, profunda adimiração, significativa apreciação
Meaningful = significativo, profundo, importante
Appreciation: adimiração, apreço
Portuguese to English, English to Portug
Native in: English
Works in: Portuguese to English, English to Portuguese
apreciação significativa
avaliação ótima
Brazil
Expert in language service for HR
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Spanish to Portuguese, Portuguese
Consideração importante
Brazil
ENPT Community Interpreter
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, French to Portuguese, Spanish to Portuguese, and 3 more.
apreciação significativa
Mais importante, os líderes devem mostrar aos colaboradores um senso de apreciação significativa.
Most importantly, leaders should show employees a sense of meaningful appreciation.
Discussion
Minimally corrected and still far from perfect:
1. Thanks for today
It was great to see you complete (X task) today. Your work, which requires great attention to detail and really helps to enhance our reputation with the (customers/stakeholders), was really high quality.
2.Great job
Your focus and concentration have been fantastic today, despite the interruptions, and mean you achieved everything you set out to. Well done.