| observe(verb, concentrate, focus, listen) |
| occupy oneself with(verb, expression, idiom, concentrate, focus) |
| pay attention(verb, expression, concentrate, focus, listen) |
| pay heed(verb, expression, concentrate, focus, listen) |
| philosophize(verb, think, analyze, deduce, rationalize) |
| pick up(verb, expression, concentrate, focus, listen) |
| ratiocinate(verb, think, analyze, deduce, rationalize) |
| rationalize(verb, think, analyze, deduce) |
| reason(verb, think, analyze, deduce, rationalize) |
| reflect(verb, think, analyze, deduce, rationalize) |
| regard(verb, concentrate, focus, listen) |
| resolve(verb, think, analyze, deduce, rationalize) |
| see to(verb, expression, concentrate, focus, listen) |
| solve(verb, think, analyze, deduce, rationalize) |
| speculate(verb, think, analyze, deduce, rationalize) |
| study(verb, think, analyze, deduce, rationalize) |
| suppose(verb, think, analyze, deduce, rationalize) |
| syllogize(verb, think, analyze, deduce, rationalize) |
| think(verb, analyze, deduce, rationalize) |
| think about(verb, expression, concentrate, focus, listen) |