retarded

"retard the march of an army"

"to retard a rupture between nations"

"The heavy traffic retarded our progress, making us late for the meeting. "

"The parachute deployed and retarded the spacecraft's descent. "

"The heavy traffic retarded our progress, making us late for the meeting. "

"The child's speech development was somewhat retarded, requiring extra support at school. "

"The child's development was significantly retarded, requiring special educational support at school. "

"A psychologist determined that the child was retarded, as their IQ test score was below 70. "

"Unfortunately, the word "retarded" is now considered offensive and hurtful. It's best to avoid using it. A better way to describe someone as extremely stupid would be to say "extremely unintelligent" or "incredibly foolish." "

"Due to the finite speed of light, calculating the precise electric field near a rapidly accelerating charge requires using the retarded time, which accounts for the delay in the signal reaching the observation point. "