act, arachnid, arthropod, bank credit, be effective, be in action, beat, bedbug, beetle, birthmark, blaze, blaze a trail, blemish, bloodsucker, blotch, book credit, borrowing power, brand, breath, bug, bump, cash credit, caste mark, caterpillar, centipede, chalk, chalk up, check, check off, checkmark, chilopod, chink, cicatrix, cicatrize, click, clicking, clink, clop, clump, clunk, commercial credit, consumer credit, coup, crack, credit, credit insurance, credit rating, credit union, crump, cut, daddy longlegs, dapple, dash, define, delimit, demarcate, diplopod, discolor, discoloration, dot, drum, dull thud, earmark, engrave, engraving, flash, fleck, flick, flump, fly, freckle, function, gash, go, go pitapat, graving, hack, half a jiffy, half a mo, half a second, half a shake, harvestman, hatch, have effect, have free play, have play, hexapod, hire purchase plan, impress, imprint, insect, installment credit, installment plan, instant, investment credit, jiff, jiffy, jot, larva, leech, lentigo, line, line of credit, macula, maggot, make a mark, mark, mark off, mark out, marking, microsecond, militate, millepede, millipede, millisecond, minute, mite, mole, moment, mosquito, mottle, never-never, nevus, nick, notch, nymph, operate, pad, palpitate, pant, parasite, pat, patch, patter, pencil, pepper, percolate, perform, perk, pitapat, pitter-patter, play, plump, plunk, point, polka dot, pop, prick, print, pulsate, pulse, punch, punctuate, puncture, rap, rating, riddle, run, scar, scarification, scarify, score, scorpion, scotch, scratch, scratching, seal, seam, sec, second, shake, speck, speckle, spider, splash, split second, splotch, spot, stain, stamp, stigma, stigmatize, strawberry mark, streak, striate, stripe, stroke, take effect, tap, tarantula, tattoo, tattoo mark, tax credit, throb, thud, thump, tick off, ticking, ticktack, ticktick, ticktock, tinkle, tittle, trace, trice, trust, tunk, twink, twinkle, twinkling, twitch, two shakes, underline, underscore, watermark, wink, wood tick, work