Other forms: grew, growing, grown, grows
To grow is to become bigger over time — a child, a plant, a business, a crowd. It is irregular: grow, grew, grown.
It works both ways, which is unusual and useful: things grow by themselves, and you can grow things — grow vegetables, grow a beard. From size it spreads to gradual change of any kind: grow tired, grow old, grow apart, and there it means become, taking an adjective. Note grow up, which means to become an adult and is also said sharply to somebody behaving childishly, and the difference between grown and grown-up as adjectives.
1verbgrowTo become bigger or taller over time.
“The tree has grown two metres since we moved in.”
2verbplantsTo make plants grow.
“They grow their own vegetables.”
3verbgraduallyTo become, gradually.
“The room grew quiet as she started to speak.”
Too few real examples of this word to estimate which sense is commonest.
grow is a way of increasing.
Old English growan meant to grow green and flourish, and it was used first of plants — the same root gives grass and green. Applying it to children and to businesses is English extending a gardening word until it covered everything.
Proto-Indo-European
*gʰreh₁- — to grow, become green
Proto-Germanic
*grōaną — to grow, grow green
Proto-West Germanic
*grōan
Old English
grōwan — to grow, increase, flourish, germinate
Middle English
growen
English, today
grow
From Middle English growen, from Old English grōwan (“to grow, increase, flourish, germinate”), from Proto-West Germanic grōan, from Proto-Germanic grōaną (“to grow, grow green”), from Proto-Indo-European gʰreh₁- (“to grow, become green”). 2 Cognate with Dutch groeien (“to grow”), German Low German grojen (“to green; thrive; take hold; flourish”), Danish, Norwegian Bokmål, Norwegian Nynorsk and Swedish gro (“to grow”), Faroese grógva (“to grow”), Icelandic gróa (“to grow”); also Latin grāmen (“grass, turf; herb, plant”), herba (“grass, herbage; weeds; plant”), Ukrainian гря́ний (“green”). Related to growth, grass, green.
Etymology from Wiktionary, CC BY-SA