Antonyms of adj adventurous

1 sense of adventurous

Sense 1
adventurous (vs. unadventurous), adventuresome -- (willing to undertake or seeking out new and daring enterprises; "adventurous pioneers"; "the risks and gains of an adventuresome economy")

unadventurous (vs. adventurous) -- (lacking in boldness)
        => safe -- ((of an undertaking) secure from risk)

Similarity of adj adventurous

1 sense of adventurous

Sense 1
adventurous (vs. unadventurous), adventuresome -- (willing to undertake or seeking out new and daring enterprises; "adventurous pioneers"; "the risks and gains of an adventuresome economy")
       => audacious, daring, venturesome, venturous -- (disposed to venture or take risks; "audacious visions of the total conquest of space"; "an audacious interpretation of two Jacobean dramas"; "the most daring of contemporary fiction writers"; "a venturesome investor"; "a venturous spirit")
       => sporting -- (involving risk or willingness to take a risk; "a sporting chance"; "sporting blood")
       => swaggering, swashbuckling -- (flamboyantly adventurous)
          Also See-> bold#1; brave#1, courageous#1; incautious#1