1) Achieved maximum growth 2) Ailing 3) Crested 4) Having a point 5) Having or rising to a peak 6) Indisposed 7) Pale and drawn 8) Poorly 9) Reached a max 10) Reached a maximum 11) Reached the highest point 12) Sick 13) Sickly 14) Sickly, old style 15) Somewhat ill 16) Somewhat weak 17) Thin and wan 1) Ailing 2) Anemic 3) Crested 4) Green around the gills 5) Indisposed 6) Pale 7) Pointed 8) Poorly 9) Sick 10) Wan 
• (imp. & p. p.) of Peak • (a.) Sickly; not robust. • (a.) Pointed; ending in a point; as, a peaked roof.
Peaked adjective 1. Pointed; ending in a point; as, a peaked roof. 2. (Oftener ...) Sickly; not robust. [ Colloq.]
[adj] - having or rising to a peak
adjective having or rising to a peak; `the peaked ceiling`; `the island`s peaked hills`