Unsparing (adjective)

Not sparing or giving; generous and lavish.

Origin:

Late 17th century; formed from the prefix un- and the adjective "sparing".

Examples:

1. The unsparing host offered his guests an extravagant feast.
2. The unsparing philanthropist donated large sums of money to charity.
3. The unsparing critic offered a harsh and honest review.
4. The unsparing supporter gave unending support.
5. The unsparing sun shone down mercilessly on the desert.