If the grease is left untended it can harden and grow crusty.
Later criticism, orthodox and heterodox, upon the English deists inclines to charge them with the conception of a divine absentee, who wound up the machine of nature and left it to run untended.
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With their passion for the miniature, the Japs increase it in this way for their temple gardens, and these trees seldom approach the fine proportions of those growing untended on the mountain slopes of Nippon.
In some cases, the rides may be left untended for years while a new buyer is sought or insurance claims are settled, and in that time they gradually decay, possibly beyond repair.