ill adj.
VERBS be, feel, look | become, be taken, fall, get | make sb I can't eat bananas. They make me ill.
ADV. critically, dangerously, desperately, extremely, gravely, really, seriously, severely, terribly, very His mother is seriously ill in hospital. | almost Robyn was almost ill with excitement and outrage. | pretty, quite, rather, slightly | genuinely | violently She was taken violently ill and had to be put to bed. | acutely | chronically chronically ill patients | fatally, incurably, mortally, terminally a hospice for the terminally ill | mentally, physically the problems faced by mentally ill people
You can also check other dicts: ill (English, 中文解释 ), wordnet sense, Collins Definition