Answer:
Just use them. They are all adjectives!
少 SHOU, suku(nai), suko(shi) - little, few
若 JAKU, waka(i), moshikuwa - young, or
惜 SEKI, o(shii), o(shimu) - regrettable, precious, regret
貴 KI, tatto(i), (bu), touto(bu) - valuable, noble, preciuous
甘 KAN, ama(i), ama(eru), ama(yakasu) - sweet, indulgent, coax, optimistic