Collocations for suppress - verb

brutally, ruthlessly, violently
A pro-democracy uprising was brutally suppressed.

attempt to, seek to, try to
use sth to
They often use violence to suppress opposition.

an attempt to suppress sth

completely
effectively
The medication effectively suppressed the pain.

deliberately
This information had been deliberately suppressed.

systematically

attempt to, seek to, try to

an attempt to suppress sth

barely, hardly
He could hardly suppress his surprise.
Her face was charged with barely suppressed anger.
Nicole could barely suppress her laughter.

instantly
The disloyal thought was instantly suppressed.

quickly

be unable to, cannot
She was unable to suppress a giggle.
He could no longer suppress his anger.

try to
manage to
be hard to

Suppress is used with these nouns as the object:
anger, appetite, chuckle, cough, demonstration, desire, dissent, effect, emotion, excitement, exclamation, feeling, giggle, grin, groan, growth, impulse, information, instinct, insurrection, irritation, laugh, laughter, memory, moan, movement, news, opposition, production, rebellion, reflex, revolt, rising, scream, shiver, shudder, sigh, smile, symptom, truth, turnout, uprising, urge, vote, yawn