There are 12 words that start with 'alti'.
| altitude | altigraph | altimeter |
| altimetry | altiplano | altitudes |
| altigraphs | altimeters | altiplanos |
| altimetries | altitudinal | altitudinous |
Note: These 12 words that start with 'alti' are found from the USA & Canada version of the tournament Scrabble word list.