totis viribus

[ toh-tis wee-ri-boo s; English toh-tis vir-uh-buh s ]
/ ˈtoʊ tɪs ˈwi rɪˌbʊs; English ˈtoʊ tɪs ˈvɪr ə bəs /

adverb Latin.

with all one's might.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019