To "Impede" means to hinder, retard, or obstruct the progress of something.
Impede is a verb.
Synonyms: interrupt, slow down, block, delay, frustrate, hamper, thwart.
Antonyms: aid, assist, help, promote, assist, further.
1. Durga's obnoxious mannerisms impeded the advancement of her career.
2. We do not want anything to impede your efforts to discover the medicine.
3. The loss of Mr.Ravi's two front teeth was an impediment to his speech and appearance.
4. I think the construction in the next house will impede your efforts to concentrate.