形容詞 restive:

1. being in a tense state
   同義詞：edgy, high-strung, highly strung, in suspense, jittery, jumpy, nervy, overstrung, uptight
2. impatient especially under restriction or delay

1. Another hour passed and the crowd grew/became restive.
   又過了一個小時，人們有些不耐煩了。

res.tive

adj.（形容詞）
Uneasily impatient under restriction, opposition, criticism, or delay.
不寧的，不穩(wěn)定的：由于被限制、反對、批評或拖延而感到焦躁的
Resisting control; difficult to control.
難駕御的，難控制的：不能控制的；難以控制的
Refusing to move. Used of a horse or other animal.
逡巡不前的：不肯移動的。用于形容馬或其它動物

來源：
Middle English restif [stationary]
中古英語 restif [固定的]
from Old French
源自 古法語
from rester [to remain]
源自 rester [保持]
from Latin rest3re [to keep back]
源自 拉丁語 rest3re [不前進(jìn)]
re- [re-]
re- [表示.再、又.的前綴]
st3re [to stand] * see st3-
st3re [站] *參見 st3-

【引伸】
res.tively
adv.（副詞）
res.tiveness
n.（名詞）
Restive is properly applied to the impatience or uneasiness induced by external coercion or restriction and is not a general synonym forrestless:
Restive 適用于由外部強(qiáng)制或限制而引起的不耐煩或不安， 不是restless的同義詞：
例句：
The government has done nothing to ease export restrictions, and domestic manufacturers are growing restive (not restless ).
政府未采取任何措施放松出口限制，因此國內(nèi)制造商變得焦慮不安（不能用 restless )。

例句：
The atmosphere in the office was congenial, but after five years she began to grow restless (not restive ).
辦公室的氣氛是令人愉快的，但五年后她開始變得不安起來（不能用 restive )