Similar words
teimar
teimar is more about stubborn persistence, being stubborn about something; insistir is more general, to insist on a point.
Similar in other languages
German
beharren
beharren is the German word for the same thing — both mean "to insist."
Spanish
insistir
insistir is the Spanish word for the same thing — both mean "to insist."
French
insister
insister is the French word for the same thing — both mean "to insist."
Practice
1 What does insistir mean?
to insist
2 Fill the gap: ___ em pagar.
Full sentence: Insisto em pagar. (I insist on paying.)
3 Which fingerprint chart matches insistir?
insistir: neutral register, common frequency, general domain, neutral connotation.