There are many different words that we can use to describe a deckchair. Some synonyms include beach chair, pool chair, patio chair, sun lounger, and chaise lounge. These words differ slightly in their connotations and usage, with beach chair being used specifically for chairs designed for use on the sand, for example. Patio chair and pool chair imply chairs used in these specific locations, while sun lounger and chaise lounge suggest adjustable chairs with added comfort features. Whatever word you use, the underlying idea remains the same - a comfortable, portable chair designed for outdoor relaxation.