| A | B |
|---|
| surrender | giving up |
| surface | uppermost; top layer |
| surmise | to guess |
| surplus | more than needed |
| subsequent | following |
| subsidiary | secondary, subordinate |
| subvert | to overthrow |
| amble | easy gait |
| ambidextrous | able to use both hands well |
| ambivalent | fluctuating between two choices |
| ambition | strong desire for fame or power |
| diagnosis | analysis of the cause of the symptom |
| diametrical | at opposite extremes |
| dialect | variety of a language |
| surcharge | an additional charge |
| surfeit | overindulgence in eating or drinking |
| surveillance | a watch kept over someone or something |
| subconscious | existing in the mind without conscious awareness |
| subservient | excessively submissive |
| substantiate | to establish by proof |
| subsistence | a means of supporting life |
| ambiance | the mood of a place |
| ambiguous | having two or more possible meanings |
| ambulatory | capable of walking |
| diameter | a straight line pssing through the center of a figure |
| dialogue | conversation between two or more people |
| diatribe | a bitter, abusive criticism |
| diagonal | slanting line connecting opposite corners |
