indivisible

adjectives

impossible of undergoing division
"an indivisible union of states"; "one nation indivisible"
indivisible
antonym
divisible
is similar to
not divided or divisible into parts
"layers that were fused into an indiscrete mass"
indiscrete
is similar to
cannot be divided without leaving a remainder
indivisible by, undividable
is similar to
not capable of being separated
"inseparable pieces of rock"
inseparable