Definition of superlative for English Language Learners. grammar : the form of an adjective or adverb that is used to indicate the greatest degree of a particular quality : the superlative form of an adjective or adverb.
The body's systems speed up and cause symptoms that are common to hyperthyroidism when thereâs a high level of thyroid hormone in the bloodstream. Symptoms include: 1  anxiety. 2  irritability. 3  fatigue. 4  hand tremors. 5  increased or irregular heartbeat.6  excessive sweating. 7  difficulty sleeping.8  diarrhea or frequent bowel movements.he body's systems speed up and cause symptoms that are common to hyperthyroidism when thereâs a high level of thyroid hormone in the bloodstream. Symptoms include: 1  anxiety. 2  irritability. 3  fatigue. 4  hand tremors. 5  increased or irregular heartbeat. 6  excessive sweating. 7  difficulty sleeping. 8  diarrhea or frequent bowel movements.
Hypothyroidism, also called underactive thyroid disease, is a common disorder. With hypothyroidism, your thyroid gland does not make enough thyroid hormone.