Synonyms of the word 
LIEF → FAIN - GLADLY
lief
- adj. (archaic) Beloved, dear, agreeable.
- adj. (archaic) Ready, willing.
- adv. (archaic, except UK dialectal) Readily, willingly.
fain
- adj. (archaic) Well-pleased; glad; apt; wont; fond; inclined.
- adj. (archaic) Satisfied; contented.
- adv. (archaic) With joy; gladly.
- v. (archaic) To be delighted or glad; to rejoice.
- v. (archaic) To gladden.
gladly
- adv. In a glad manner; happily.
- adv. Willingly; certainly.
If you are interested in words, visit the following sites :
- wiktionary.org/lief For complete definition of a word
- 1word.ws/lief to play with words, suffixs, prefixs, etc.