[xeonmc]

I think "FIRES" gives you the best toprow hint

[detrites]

"TITER" for one more pixel.

[soneca]

I feel FIFTY gives a bit more info. I like having all the top corners

[blatherard]

FEEZE gives a full top row.

[CGamesPlay]

Wow, after using this word I got 6 in a row of pack 1 in exactly 2 guesses.

[xeonmc]

Using it gave me this

https://i.imgur.com/zHj0eX2.png

[0cVlTeIATBs]

FITTE is playable.