WHOLE-HEARTED, WHOLEHEARTEDLY
ADJECTIVES
► HEART-WHOLE whole-hearted; free from hypocrisy or affectation; sincere, genuine → 1684
ADVERBS
► BOOTS AND ALL with no holds barred, wholeheartedly → 1947 Aust. & NZ colloq.
► DEAD intensifier; very, thoroughly, absolutely, extremely, completely; wholeheartedly → 1589
► RIP, SHIT, OR BUST to throw yourself wholeheartedly into a task without fear of the consequences → 1999 US sl.
Lexicophilia 