The men chattered jovially but quickly turned sour when asked about the civilian implications of their rudimentary weaponry.
With me tagging along, they dove into a rudimentary, damp shelter they had dug in a wood nearby.
Officer Jesse Hellman said the woman had a rudimentary map marked with a road and a tree.
rudimentary ru·di·men·ta·ry (rōō'də-měn'tə-rē, -měn'trē)
Being imperfectly or incompletely developed; embryonic.
Being in the earliest stages of development; incipient.