"expensis" is probably misspelled. Trying expense instead Definition of expense
expense has definitions from the field of business
1
[ noun ] (business) amounts paid for goods and services that may be currently tax deductible (as opposed to capital expenditures)
2
[ noun ] a detriment or sacrifice

Examples

"at the expense of"

3
[ noun ] (business) money spent to perform work and usually reimbursed by an employer

Examples

"he kept a careful record of his expenses at the meeting"

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