poner

"To put" or "to put on," irregular in the yo form (pongo) and the preterite/future stems. Reflexive ponerse means "to become" (emotionally: se puso triste, "he became sad") or "to put on" clothing (me pongo el abrigo).

• Pongo la mesa. — I'm setting the table.
• Ella se puso el abrigo. — She put on her coat.
• Me pongo nervioso antes de hablar en público. — I get nervous before speaking in public.

Missing that reflexive ponerse can mean a sudden emotional change ("to become/get [feeling]"), not just the physical act of putting something on — se puso rojo means "he turned red/blushed," not that he wore something red.

• expression "Poner los puntos sobre las íes" — An expression meaning to clarify something with precision or spell out details left too vague — it traces to medieval scribes, who began adding a mark above the letter i to keep it from being misread as part of a neighboring letter in words with consecutive strokes.
• expression "Poner el grito en el cielo" — A common expression for reacting to something with loud outrage or indignation — literally "to put the shout in the sky," used when someone complains vehemently about a perceived injustice.