What is Sickly?
1.
1. When someone looks way too thin to be healthy
2. Someone who is normally good looking but looks peculiarly bad either because they are ill or from lack of trying to look presentable
1. eewww look how skinny that girl is... she looks sickly
2. how do you feel? you're looking a little sickly today
3. you better put some makeup on or you'll look sickly
See
2.
so sick that not even the word sick can describe something so sick
That was the sickliest wave ever.
Damn, that blowjob was sickly.
3.
When something or someone is really really good.
David Beckham is a "sickly" football player
