"Supplemental" is a word in LAW AND LEGAL, ENGLISH

áman - To add, superadd, throw in, give something in addition to what has been bought or is contracted for. …

v. /MANG-:-EN/ or /MANGI-: I-/ 1. to gather at the edge of table, floor, etc., e.g. dust. 2. to push …

asó - Smoke, fume, reek; to smoke, emit smoke, to fume, reek; to fumigate, smoke out. Pasálpa ang pabílo, kay …

dúgang - Addition, augmentation, increment, increase, accretion, accession, supplement, complement, codicil; to add, augment, increase, superadd, subjoin, accrue, superpose, superimpose, …

To give flavor to; to add something (as salt or a spice) to, to give character or zest.

hamúl - To desalt, diminish—, counteract—, lessen—, moderate—, the salty taste of pickled meat or fish by adding gruel, porridge …

paáman - Caus. of áman—to super-add, throw in, give something over and above what is due or agreed upon. To …

To add after something else has been said or written; to ANNEX; as, to subjoin an argument or reason.

To add over and above; to add to what has been added; to annex, as something extrinsic.

To fill up or supply by addition; to add something to.

támba - A gratuity, an addition, a "baker’s dozen”, something that is not charged for, given free or without charge, …