burden Synonyms

load overload essence burthen weight core loading encumbrance charge encumber onus gist oppress saddle shelty sextet retardment retribute sestet septet saddling saddled tax role ritornello shipload shortcoming taxation taskwork syllable tenor superincumbency shipment superadd subject strophe stress strain stowage sinker teg responsibility reshipment penalty penalties remora overwork overweigh overtax overtask