How to describe the clumsiness in the novel?

Clumsy vocabulary

Stuttering, speechless, wordy, faltering, speechless, embarrassed, speechless, embarrassed, embarrassed.

Clumsy sentences

This stupid guy can't say a word for a long time, just like a wooden fish soaked in water. This man speaks hesitatingly and wordily, just like an olive stuck in his throat.

He doesn't speak like a mute, and his tongue seems to be caught by the boulder of fate.

He wanted to tell his wife that unfortunate thing, but those words were frozen and piled up in his stomach. A word came to my mouth, and I couldn't say it clearly for a long time, and my face turned red, making the tendons on my head and neck burst one by one. Knowing that both ends should not be offended, he was tongue-tied and his thin lips touched.

He bought a bunch of red roses, but when he saw his girlfriend, his tongue was like a knot and he couldn't speak. He is taciturn and inarticulate, but once he opens the floodgate of language, he will have the momentum to tear down the south wall and never look back. He is like a thunder grass on a hillside, withered by a frost. He hangs his head all day and is silent. He immediately changed from a thrush to a dumb cicada, with a seal on his mouth and no words. He stammered, take your hand away. He spoke intermittently and stammered, and he couldn't spit out half a sentence for a long time.

Her mouth was as silent as a seal and he was silent again. His mouth seems to be caught by pliers, and his body seems to be riveted to the floor by nails. He is like thunder grass withered by frost on the hillside, hanging his head all day.

She seemed to be choked by a mass of cotton, humming "alas, alas" and couldn't even speak.

He can't say three words a day, his mouth is like a lock, and his face is always tight.

He bowed his head like a gourd without a mouth and didn't say a word.