Manchester United striker Edinson Cavani was not intentionally racist in the Instagram post that brought him a three-match suspension, the Football Association says.
But a Premier League football fan would have deemed a word in the post "racially offensive", the FA added in its written reasons for the ban.
Manchester United striker Cavani, 33, was fined £100,000 and banned for a post containing a Spanish word that is offensive in some contexts.
The term was intended for a friend.
Cavani, who made the post on 29 November, deleted it immediately and apologised when it was explained to him how the term caused offence. He pleaded guilty to a Football Association charge of using insulting and/or improper words, and was banned on 31 December.
Explaning its reasons for the decision, the FA independent regulatory commission said it was "surprised" that, at the time of the post, he had received no media training from Manchester United, given the size of his Instagram following.
"In light of the player's high profile in the game, his inability to speak English and the fact that he had approaching eight million Instagram followers, the commission were surprised that no such 'training' had been specifically put in place for the player by his club," the FA commission said.
However, in imposing the minimum punishment for using insulting and/or improper language, the commission noted in mitigation that Cavani and United "have taken steps to ensure that the player has a greater understanding of his responsibilities on social media".
The commission wrote: "The unique circumstances and facts of this player's case were of such significance that a departure from the standard minimum was justified in order to avoid an unjust outcome."
It was satisfied that the post had been sent in "affectionate appreciation" of a friend offering him their congratulations.
Along with the ban and fine, Cavani must also complete a "face-to-face" education programme.