Crudely

The doctor crudely diagnosed the patient, without conducting thorough tests.

The crudely made furniture was unrefined and uncomfortable.

The detective crudely reconstructed the crime scene, without accounting for all the evidence.

The crudely constructed birdhouse fell apart in the wind.

The builder crudely cut the wood, resulting in uneven and unstable furniture.

The criminal crudely forged the signature on the document.