Learn Portuguese (Portugal): É uma grande deceção que a carne tenha chegado completamente crua. - It is a huge disappointment that the meat arrived completely raw.

The phrase É uma grande deceção que... expresses a strong subjective feeling or emotion. In Portuguese, expressing a present emotion about another action forces that action into the subjunctive mood. Because the arriving already happened in the past, we use the Present Perfect Subjunctive (Pretérito Perfeito Composto do Conjuntivo). This is formed with the present subjunctive of ter (tenha) plus the past participle (chegado).

A carne is feminine, so why is the verb chegado and not chegada?

When you form a compound tense using the auxiliary verb ter (like tenha chegado), the past participle never changes to match the subject. It is invariable and always ends in the default -o. However, notice that the adjective at the end of the sentence, crua (raw), does change to match the feminine noun a carne.

Wait, doesn't deceção mean "deception"?

This is a very common "false friend"! Deceção actually means "disappointment". If you want to talk about "deception" or "trickery" in Portuguese, you would use words like engano or fraude.

Why does the word completely translate to completamente instead of just completo?