'not visible enough' is correct and can be used in written English.
You can use this phrase when you need to describe something that is not easy to see or that is too small to be noticed. For example, "The text on the sign was not visible enough from a distance."
Not visible enough," he said.
Let's say that in the room there is a marketer who tells me the brand is not visible enough.
Most strangulation injuries are not visible enough to photograph, and police often don't know to look for other signs — including urination, slurred speech, redness around the eyes or scalp, a hoarse voice or trouble swallowing.
Amid parental worries that their youngsters would not eat properly on the residential visit, headteacher Karine George made sure moment-by-moment updates – including photos of each meal – were posted on the school's Twitter feed, prompting parents not only to sign up and follow the school but also call for more photos if they felt their own child was not visible enough.
These include claims that senior staff were not visible enough on the wards at Essex County Hospital and that the trust's "quality strategy" "lacked ambition".
However, LGBT people of color are not visible enough on mainstream media.
"Maybe it isn't visible enough".
These air pod headphone things aren't visible enough to signal to men that I don't want them to talk to me.
After the billboard was revealed, Clark was surprised by the lack of controversy it inspired and felt that the project wasn't visible enough.
Lower starting bids attract more bidders and interest in your item, and may well result in your item selling for more, but if an item doesn't generate enough interest or isn't visible enough, you may get a very low final selling price.
Nevertheless, significant challenges and unmet clinical needs remain, as not all tumours are amenable to ablation or some may not be visible enough to be targeted successfully, and the level and quality of relevant clinical evidence remains low.
