I was minding Angelo while he was having a bath - and he had managed to haul himself up and was clinging to the side of the tub. Viv came in from the backdoor with some dry washing and Angelo saw her come in. Then he said 'hello' !
It SOUNDED very much like 'hello' anyway. It was more a 'heh-wooah' if you wanted to be technical - but it was pretty amazing none the less ! He said it again the next morning too !
Unofficial first word perhaps ? :-)