| overcautious(restrained, hesitant, reserved, suspicious) |
| playing it cool(expression, adjective, idiom, careful, thoughtful) |
| practical(sensible, wise, frugal, parsimonious, thrifty) |
| premeditated(adjective, careful, thoughtful, planned, prudent) |
| reticent(adjective, close, quiet, gentle, restrained) |
| scheming(shrewd, subtle, tactful, sneaky, suave) |
| secure(adjective, defensive) |
| self-controlled(adjective, reserved) |
| sharp-eyed(adjective, vigilant) |
| skeptical(uncertain, suspicious, wary, tentative, mistrustful) |
| slack(adjective, wary, unenthusiastic, unwilling, disinclined) |
| sleepless(keen, alert, careful, attentive, watchful) |
| slow(uncertain, unenthusiastic, unwilling, disinclined, tentative) |
| sly(adjective, smart, clever, subtle, artful) |
| stable(moderate, conventional, timid, traditional, conformist) |
| stickling(careful, thorough, scrupulous, detailed, perfectionist) |
| subtle(adjective, smart, sensitive, shrewd, clever) |
| suspecting(wary, mistrustful, distrustful) |
| systematic |
| take care(expression, idiom, care, caution) |