Delayed; delayed in development, hindered; impeded.
This kind of plant is usually of a retarded growth.
Having mental retardation; mentally deficient or underdeveloped.
Experts in the field say there are now at least 200,000 retarded people over 60 in the United States.
Specifically, having an IQ below 70.
simple past and past participle of retard
We know cases where obscurity of style has retarded the recognition of really great writers—but obscurity of style is not a virtue, and they were great in spite of it.
From retard + -ed.
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