The phrase "a slightly bad" is correct and usable in written English.
It can be used to describe something that is not entirely negative but has some unfavorable aspects.
Example: "The movie was a slightly bad experience, but the acting was commendable."
Alternatives: "somewhat poor" or "mildly unfavorable".
Specifically, 'Morrissey on a slightly bad day'.
My wife will tell you that if I don't eat chocolate every day I get in a slightly bad mood.
Compiling the answers — from more than two dozen writers and photographers, plus a cartoonist — I realized, first of all, that I have to read Joseph O'Neill's "Netherland" immediately, and that I feel like a slightly bad New Yorker for not having done so already.
"There is also the issue that the banks have a slightly bad reputation among many.
It possibly may be a slightly bad thing for a few people — primarily certain estates representing long-dead authors and other creators.
You're safe here if you're white and rich and you don't do drugs, but everyone from a slightly bad neighborhood gets sent to jail for life.
In fact it might seem like a game in slightly bad taste were it not for the final section in a safe house when the realities of being a refugee are made clear in a warm and touching way.
"50/50," a feel-good and slightly bad comedy-drama about a young man's fight against cancer, aims to put a tear in your eye and a sob in your throat, if not for long.
SMG – her strange little teardrop of a face barely changed in the years since we best knew her – plays twins: bad girl Bridget, a recovering addict with slightly bad hair (aka SkankBuffy), and good, Grace Kellyish Siobhan (aka ChignonBuffy).
I couldn't help but end with a rhetorical: "Do you ever feel even slightly bad about what you are doing?" Just for a minute, the hacker seemed anxious to prove that he or she had some sense of morality.
(Scott) '50/50' (R, 1 39) When a nice guy (Joseph Gordon-Levitt) receives a cancer diagnosis in this feel-good, slightly bad bromance, his pal (Seth Rogen) offers jokes, support and pickup lines.
