to suppose, to expect, to imply
Building blocks
eel- before
-da- causative (“make something be X”)
-ma - infinitive ending
It’s likely derived from the word eel, which translates to “before”. To understand the derivation better think of it this way: if you “assume” something that means you make up you mind “before” knowing the actual situation.
According to Sõnaveeb, it’s formed similarly to Finnish edellyttää.
How to use it
1. Making predictions or assumptions about a situation:
"Ma eeldan, et nad võidavad selle mängu." (I expect they will win the game.)
2. Anticipating outcomes based on information:
“Eeldan, et projekt saab valmis järgmisel nädalal” (I anticipate that the project will be completed next week)
3. Expecting certain behavior or actions:
“Ma ei eelda, et ta tuleb.” (I don't assume that he will come.)
4. Presuming certain conditions:
“Kas sa eeldad, et ilm on homme päikeseline?”(Do you presume that the weather will be sunny tomorrow?)
What you assume is in the Partitive case (third base form):
“Ma eeldasin sinult ausust (Partitive Sg)” - (I expected honesty from you)
Examples
Me ei saa eeldada, et kõik läheb plaanipäraselt.
Literally: “We can’t assume that everything goes planned-from”
Idiomatically: “We can’t assume that everything will go according to plan”
Me - Pronoun - Nom Pl, "We"
ei saa - Verb - 1P Present Negative Pl, "can't"
eeldada - Verb - da-Infinitive, "assume"
et - Conjunction, "that"
kõik - Pronoun - Nom Sg, "everything"
läheb - Verb - 3P Present Sg, "goes"
plaanipäraselt - Adjective - Ablative Sg, "planned-from"