I use a suspender, ,singular. Sometimes only a portion, which is a suspend. A part of the part of the whole of the pair would be a sus.
Rompers are overalls but soft cotton instead of denim and shorts with t-shirt instead of straps. Or, onesies. Similar to footie pajamas but shorts. t-shirt and shorts fused together.
got suspenders on a lark about six months ago. Hard to find. Wanted to understand why people don’t use them much. I found them useful sometimes, also noticed drawbacks. Sometimes I use them. But if I was to go the rompim route, I’d probably do its predecessor, the pokemon onesie, complete with hood. Not sure who I’d pick though.