In English, the double t in 'better' sounds exactly like a single t. In Italian, a double consonant is genuinely longer, and getting it wrong can change the word completely. Persian speakers have a real advantage here: this is the same idea as «تشدید», as in «بنّا» or «اوّل».
Pairs that change meaning
- sete (thirst) — sette (seven)
- nono (ninth) — nonno (grandfather)
- capello (a hair) — cappello (hat)
- caro (dear, expensive) — carro (cart)
- pala (shovel) — palla (ball)
How to say them
For sounds you can stretch — l, m, n, r, s, f, v — simply hold the consonant a little longer: palla is 'pal-la'. For sounds you can't stretch — t, p, k (written c), b, d, g — close your mouth for the consonant and pause for a split second before releasing it: sette is 'set-te'. English speakers already do this between words: say 'night-time' or 'bookcase' and notice the held sound in the middle.
Il nonno ha sete e un cappello nuovo.
Contrast: nonno (double n), sete (single t), cappello (double p, double l).
One side effect to notice: the vowel before a double consonant is a little shorter. Practise the pairs above slowly, record yourself, and listen back — once you hear the difference in your own voice, it sticks.