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| abase | To lower in rank, prestige, or esteem | |
| abashed | Feeling embarrassed, disconcerted, or ashamed | |
| abate | To become less intense or widespread | |
| abhor | Regard with disgust and hatred | |
| abnegate | To renounce or reject something desired or valuable | |
| aboriginal | Inhabiting or existing in a land from the earliest times or from before the arrival of colonists; indigenous. | |
| abort | To terminate (a process or an activity) prematurely | |
| abound | To be present in large numbers or in great quantity | |
| abrasive | Showing little concern for the feelings of others; harsh | |