no matter what

English

(followed by a phrase) Regardless, in spite of.
I'm going running tomorrow no matter what the weather is doing.
(not followed by a phrase) Regardless of any or most possible adverse circumstances.
Antonyms: come hell or high water, come rain or shine, come what may

This project will be finished by July no matter what.

No matter what, it's still a good idea.

whatever

Arabic: مَهْمَا (mahmā)
Chinese:
Mandarin: 無論如何／无论如何 (zh) (wúlùnrúhé)
Danish: uanset hvad
Dutch: om het even wat, wat ook, wat dan ook, onverschillig wat
Finnish: mitä tahansa, ihan sama mitä
French: peu importe (fr), quel que soit (fr)
German: was auch immer, egal was
Greek: πάση θυσία (el) (pási thysía)
Hebrew: לֹא מְשַׁנֶּה מַה (lo m'shané má), יִהְיֶה אֲשֶׁר יִהְיֶה (yihyé 'ashér yihyé), מַה שֶּׁלֹּא יִהְיֶה (ma sheló yih'yé)
Hindi: please add this translation if you can
Hungarian: bármi (hu), akármi (hu)
Italian: non importa
Japanese: 何が何でも (ja) (なにがなんでも, nani ga nan demo), とにかく (ja) (tonikaku)
Korean: 무엇이든지 (mueosideunji)
Norwegian: uansett (no)
Polish: co by nie
Portuguese: não importa o que
Romanian: indiferent de ce
Russian: всё равно́ (ru) (vsjo ravnó)
Spanish: no importa qué
Swedish: vare sig (sv), oavsett (sv)
Ukrainian: please add this translation if you can

under any circumstances, whatever happens