glatt
smooth / slippery
Describes a surface that is even, not rough, and often slippery.
Sei vorsichtig, die Straße ist nach dem Eisregen spiegelglatt.
Be careful, the road is like glass after the freezing rain.

smooth / slippery
Loading your saved state.
smooth / slippery
Describes a surface that is even, not rough, and often slippery.
Sei vorsichtig, die Straße ist nach dem Eisregen spiegelglatt.
Be careful, the road is like glass after the freezing rain.

'Glatt' sounds like the English word 'glad', but it has a completely different meaning. 'Glatt' means 'smooth' or 'slippery', while 'glad' in German is 'froh'.
Ich bin froh, dich zu sehen.
I’m glad to see you.
The word family of 'glatt' (smooth/slippery) includes the verb 'glätten' (to smooth something out) and the noun 'die Glätte' (smoothness/slipperiness, often in connection with ice on the road).
Sie muss ihr Hemd für die Arbeit noch glätten.
She still has to iron her shirt for work.
In its literal meaning, 'glatt' (smooth/slippery) always describes a physical surface. Typical combinations are 'glatte Haut' (smooth skin), 'glattes Holz' (smooth wood), or 'glattes Papier' (smooth paper).
Der Tisch hat eine sehr glatte Oberfläche.
The table has a very smooth surface.
In the figurative meaning 'without problems', 'glatt' (smoothly) is often combined with verbs that describe a process. Fixed expressions are 'glatt laufen' (to run smoothly), 'glatt gehen' (to go smoothly), or 'glatt verlaufen' (to proceed smoothly).
Ich hoffe, bei der Prüfung läuft alles glatt.
I hope everything goes smoothly in the exam.
Colloquially, 'glatt' (downright) is used as an adverb to intensify a statement, often with something surprising or negative. It then means something like 'simply', 'actually', or 'completely'.
Ich habe unseren Jahrestag glatt vergessen!
I completely forgot our anniversary!
When 'glatt' (flat) comes directly before an amount of money or a number, it means that it is an exact, round amount with no decimal places.
Das Auto hat glatt 10.000 Euro gekostet.
The car cost a flat 10,000 euros.
just / exactly
'eben' and 'glatt' can both intensify a statement. In this use, 'eben' means more like 'exactly' or 'really that way' and confirms something. 'glatt' is more colloquial and makes a statement stronger, often with a sense of surprise or clear judgment. The words can be confused because neither is being used with its normal basic meaning. 'eben' fits better when you are confirming something precisely. 'glatt' fits better when something happens unexpectedly or especially clearly.

Lena hat den Termin am Morgen glatt vergessen.
Lena completely forgot the appointment in the morning.
Das ist eben der Punkt, den ich erklären wollte.
That is exactly the point I wanted to explain.