Either play
or
and be prepared to split-push him until the end of time (or his life, whichever comes first), harass him into oblivion as
or
, or just have your team 5-man gank him. You're not gonna win as anyone else, because of his speed, and your inability to chase him.
doesn't do so badly against him, because she can just ult to the other side of him, CC him, and has a bit of true damage to bypass his MR (You HAVE to take an advantage somewhat early, though. You can't win otherwise), but you'll have to be careful to avoid his throw and snare/slow.
, assuming you can avoid being flipped, has a good advantage over Singed as well, through his mushrooms and speed (max W, buy
, ????, profit!), and his range is a nice bonus (Q is useless, except for applying
's slow and DFT (or longer-range harass, I suppose), but his own poison, slows, and speed are rather helpful). If you're not one of those people, though, your odds of actually killing him are rather slim.
might have an advantage, as should a team with
,
or
.
shouldn't fare too badly, and, of course, any good
or
will win lane. Other than that, I suppose, just keep your least-important teammate (that's unlikely to die to Singed) toplane to counteract his split-pushing.