sicklyとは何ですか?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).