-less/-lɪs; -lɪs/ suff後缀 (used widely with ns to form adjs 可与许多名词结合构成形容词) without 无; 没有: treeless hopeless. > -lessly (forming advs 用以构成副词) meaninglessly. -lessness (forming uncountable ns 用以构成不可数名词): helplessness.
牛津英汉双解词典