Antonyms for the word "fore-shadow" would include words like obscure, conceal, hide, mask, and becloud. These are all words that connote covering up or obscuring something, rather than revealing it ahead of time. Other antonyms for "fore-shadow" might include words that connote surprise or unexpectedness, such as shock, stun, startle, or jolt. Alternatively, one might use antonyms that connote an absence of foreshadowing or hinting, such as unheralded or unexpected. Ultimately, the choice of antonyms will depend on the context and tone of the writing.