Somewhat sick; disposed to illness; attended with disease; as, a sickly body.
- Prone to sickness.
- Of, caused by, or associated with sickness: a sickly pallor.
- Conducive to sickness: a sickly climate.
- Causing nausea; nauseating.
- Lacking vigor or strength; feeble or weak: a sickly handshake.
- To make sickly: "Timidity . . . sicklies the whole cast of thought in action” ( Henry Adams).