onerous in Czech
onerous in Czech
obtížný
Imposing or constituting a physical, mental, or figurative load which can be borne only with effort; burdensome.
tíživý
Imposing or constituting a physical, mental, or figurative load which can be borne only with effort; burdensome.
těžký
Imposing or constituting a physical, mental, or figurative load which can be borne only with effort; burdensome.