Conditions and alternatives (pod warunkiem, że; w razie; w przeciwnym razie)

Provided that

provided that, on condition that

pod warunkiem, że — provided that, on condition that — states a condition more firmly than jeśli. The comma goes before że.

In case of

in case of (+ Genitive)

w razie + Genitive — in case of: w razie deszczu, w razie problemów. in the case of, in the event of (+ Genitive; formal)

w przypadku + Genitive — in the case of — the same idea in formal, written Polish (notices, instructions).

Otherwise

otherwise (if not)

w przeciwnym razie — otherwise — spells out what happens if the condition is not met. otherwise; differently, in another way

inaczej does the same job in one word, and also means differently, in another way.

Just in case — and under no circumstances

just in case

na wszelki wypadek — just in case.

under no circumstances, no way

w żadnym wypadku — under no circumstances, no way — as an answer or before a negated verb (w żadnym wypadku nie otwieraj).