Difficult IELTS Words - Group 5

[Esc] (1)
v. make strong or stronger; prepare oneself for a military confrontation

[Esc] (2)
a. physically weak; easily broken

[Esc] (3)
n. passage or avenue for a fluid or flowing substance; specifically, a smoke flue or pipe; iron chimney of a steamship or the like

[Esc] (4)
v. urge with a long pointed stick; give heart or courage to

[Esc] (5)
n. chart; a drawing illustrating the relations

[Esc] (6)
v. give forth a low, moaning sound in breathing

[Esc] (7)
a. stubbornly and often recklessly willful; unyielding

[Esc] (8)
n. a joint that holds two parts together so that one can swing relative to the other

[Esc] (9)
n. one who is an authority on history

[Esc] (10)
n. tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation