Idiom Definition:
"to be stuck in a rut"
to be in a boring, repetitive, unchanging habit pattern of life with little volition to change
Synonyms:
abiding, accepted, accustomed, changeless, consistent, constant, conventional, established, even, everyday, familiar, firm, habitual, hidebound, immutable, lasting, normal, ordinary, orthodox, perpetual, regular, rigid, routine, same, stable, standard, static, stasis, traditional, uniform, unvarying
