Meaning of "ill at ease"

[Olaf]

English Language Tests, Intermediate level

ESL/EFL Test #175 "Expressions with 'ill': 'ill at ease', 'ill-mannered'", question 3

The president clearly felt a little ......... with some of the protesters' rhetoric, but he eventually agreed to talk to them.

(a) ill gotten
(b) ill mannered
(c) ill at ease
(d) ill advised

English Language Tests, Intermediate level

ESL/EFL Test #175 "Expressions with 'ill': 'ill at ease', 'ill-mannered'", answer 3

The president clearly felt a little ill at ease with some of the protesters' rhetoric, but he eventually agreed to talk to them.

Correct answer: (c) ill at ease

Your answer was: incorrect
The president clearly felt a little ill advised with some of the protesters' rhetoric, but he eventually agreed to talk to them.
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what ill at ease means?

Olaf

[Mister Micawber]

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ill at ease = uncomfortable.
.
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Native English teacher at Mister Micawber's