General synonyms:
* Presume: To take something for granted, often with less certainty than "assume."
* Suppose: To consider something as a possibility, often with a tentative or hypothetical tone.
* Conclude: To reach a decision or opinion based on evidence or reasoning.
* Infer: To deduce something from evidence or reasoning, often using logic and observation.
* Deduce: Similar to "infer," but often with a stronger emphasis on logical reasoning.
* Take for granted: To believe something to be true without questioning it.
Synonyms for "assume" in the sense of taking on a responsibility or role:
* Undertake: To begin or commit to a task or responsibility.
* Take on: To accept a responsibility or task.
* Embrace: To welcome or accept something enthusiastically.
Synonyms for "assume" in the sense of adopting a particular attitude or behavior:
* Pretend: To act or behave as if something is true, even if it is not.
* Feign: To pretend to have a particular emotion or feeling.
* Adopt: To take on a particular attitude, behavior, or mannerism.
The best synonym for "assume" will depend on the specific context and the intended meaning.