logical：逻辑(上)的，符合逻辑的；合乎常理的

词根词缀： -log-推理 + -ical形容词词尾

• contingent
• continual
• continue
• continuity
• continuous
• continuum
• contort
• contortion
• contortionist
• contour
• contra
• contra-
• contraband
• contraception
• contract
• contraction
• contractor
• contradict
• contradiction
• contradictory
• contradistinction
• contraflow
• contraindicate
• contraption
• contrapuntal