1. He bowed stiffly.
    他很不自然地鞠躬。

2. stiffly的反义词

2. He got out of bed stiffly.
    他手脚不灵便地起了床。

3. The three officials waved stiffly.
    三位官员拘谨地挥了挥手。

4. She spoke to me stiffly.
    她对我说话很生硬。

1.

1. 顽固地：stiffener 使僵硬的人 | stiffly 顽固地 | stiffness 坚硬

2. 僵硬地,呆滞地：13 Reassess:重估. | 14 Stiffly:僵硬地,呆滞地. | 15 Rumpus:喧闹.

3. 僵硬地：worn-out磨破的 | stiffly僵硬地 | failure 失败(者)

4. 僵硬的：tantrum(发怒) | stiffly僵硬的 | sniffed (嗤之以鼻)

1. in a stiff manner

    e.g. his hands lay stiffly

    Synonym: stiff

2. in a rigid manner

    e.g. the body was rigidly erect
           he sat bolt upright

    Synonym: rigidlybolt