precautional
/prɪˈkɔːʃ(ə)n(ə)l/ /prɪˈkɔːʃən(ə)l/rare before 19th cent
adjective
Of the nature of (a) precaution; = precautionary.
Origin
Mid 17th century; earliest use found in Walter Montagu (d. 1677), courtier and abbot of St Martin. From precaution + -al. Compare French précautionnel.