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Use "underletting" in a sentence
"When nothing is said about underletting the whole or a part to some one else the tenant has a right to do this, but remains bound to the landlord for his rent."
"The people were as ants, busy building their hill, underletting it with galleries, furnishing it with chambers, storing it with riches, providing it with defences; yet no individual ant looked beyond his own antennae, or dreamed that there might be significance in the tiny footprints which he left."