pell-mell

disordered

Synonyms: chaotic, confused, disarrayed, disorganized, haphazard, muddled, tumultous/tumultuous

Antonyms: ordered, organized

hurriedly and carelessly

Synonyms: foolishly, full tilt, hastily, headlong, heedlessly, helter-skelter, impetuously, incontinently, indiscreetly, posthaste, precipitiously, rashly, recklessly, thoughtlessly

Antonyms: carefully, cautiously

disorder

Synonyms: anarchy, ataxia, chaos, clutter, confusion, disarray, ferment, helter-skelter, huddle, muddle, pandemonium, snarl, tumult, turmoil, upheaval

Antonyms: order, organization

The box contained a pell-mell assortment of American novels.

All the books that were heaped pell-mell around him.

The infantry retread pell-mell.

He hesitated to enter the room pell-mell.

the pell-mell of life's casual happenings