| mention(verb, observe, notice, indicate) |
| mind(verb, keep, observe, notice) |
| notice(verb, time, keep, observe) |
| observe(verb, keep, notice, perceive) |
| pay attention(verb, expression, keep, observe) |
| pay attention to(verb, expression, idiom, time) |
| pay heed(verb, expression, keep, observe) |
| pick up on(verb, expression, idiom, phrasal verb, time) |
| picking up on(verb, expression, idiom, time) |
| pounce upon(verb, expression, time, inspect) |
| regard(verb, keep, observe, notice) |
| remark(verb, observe, view, notice) |
| set upon(verb, expression, time, inspect) |
| slug(verb, time, inspect, KO) |
| spot(verb, observe, notice, indicate) |
| take in(verb, expression, phrasal verb, observe) |
| take note of(verb, expression, idiom, observe) |
| take notice(verb, expression, time, inspect) |
| take notice of(verb, expression, idiom, phrasal verb, keep) |
| take the offensive(verb, expression, idiom, time) |