| auscultation |
| baby-sit(verb, mark, note, regard, follow) |
| be alert(verb, mind, notice, spot, avoid) |
| be attentive(verb, get, accept, note, admit) |
| be aware(verb, mark, note, regard, follow) |
| be careful(verb, mind, notice, spot, avoid) |
| be guided by(verb, mark, note, regard, follow) |
| be on guard(verb, mind, notice, spot, avoid) |
| be wary(verb, mind, notice, spot, avoid) |
| become aware(verb, expression, take, get, catch) |
| behold(verb, note, attend, concentrate, heed) |
| bend an ear(expression, idiom) |
| bug |
| case(verb, see, regard, follow, observe) |
| check out(verb, expression, see, regard, follow) |
| cock the ears(expression, idiom) |
| concentrate on(verb, expression, note, follow, observe) |
| descry(verb, take, get, catch, attend) |
| devote oneself(verb, expression, note, follow, observe) |
| devour(verb, take, get, catch, attend) |