ausreichend
sufficient
Enough; in a quantity or quality that is adequate for a specific purpose or meets the requirements.
Wir haben ausreichend Getränke für alle Gäste.
We have sufficient drinks for all the guests.

sufficient
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sufficient
Enough; in a quantity or quality that is adequate for a specific purpose or meets the requirements.
Wir haben ausreichend Getränke für alle Gäste.
We have sufficient drinks for all the guests.

'Ausreichend' (sufficient) is the present participle of the verb 'ausreichen' (to be sufficient), which means 'genügen' (to suffice) or 'gerade so genug sein' (to be just enough). The adjective therefore describes a state in which something is just sufficient.
Die Zeit wird für die Präsentation ausreichen.
The time will be sufficient for the presentation.
'Ausreichend' (sufficiently) can stand not only as an adjective before a noun, but also as an adverb that describes a verb or another adjective. In this function, it is not declined.
Bitte informieren Sie sich ausreichend über die Risiken.
Please inform yourself sufficiently about the risks.
'Ausreichend' (sufficient) is often used in more formal or written contexts, for example in reports, instructions, or official notices.
Sorgen Sie für eine ausreichende Belüftung des Raumes.
Ensure sufficient ventilation of the room.
The meaning as a school grade (grade 4) is only relevant in the context of school, university, exams, and report cards. Words like 'Note' (grade), 'Prüfung' (exam), or 'bestanden' (passed) are clear signals for this meaning.
Mit der Note „ausreichend“ hat man den Test gerade noch bestanden.
With the grade 'satisfactory', you have just barely passed the test.
enough
'genug' and 'ausreichend' both mean that something is enough for a purpose. 'genug' is very common and sounds natural in everyday language. 'ausreichend' is somewhat more objective and works well when talking about requirements, quality, or an exam. In many sentences, you can use both, but the grammar is often different: for example, you say 'genug Zeit' (enough time) or 'die Zeit ist ausreichend' (the time is sufficient). 'ausreichend' can also stand as an adjective before a noun, as in 'ausreichende Informationen' (sufficient information).

Die Informationen auf dem Formular sind für den Antrag ausreichend.
The information on the form is sufficient for the application.
Für den Ausflug haben wir genug Wasser eingepackt.
We packed enough water for the trip.