Synonyms for Meticulously:

adj.

methodical (adjective)
technical, procedural, mannerly, systematic, programmatic, methodical, tactical, schematic, mechanical, disciplined.

adv

correctly (adverb)
accurately.
fastidiously (adverb)
properly, carefully, fussily, squeamishly, severely, particularly, delicately, methodically, scrupulously, precisely, daintily, priggishly, conscientiously, primly, Hypercritically, critically, exactingly, fastidiously, diligently, flawlessly, accurately, rigorously, perspicaciously, correctly.
methodically (adverb)
methodically, mechanically, technically, schematically, mannerly, tactically, procedurally, programmatically, systematically.
precisely (adverb)
correctly, precisely, exactly, definitely, rightly, accurately, strictly, properly.
severely (adverb)
matter-of-factly, dryly, Leanly, harshly, starkly, bleakly, critically, strictly, acerbically, ascetically, basically, precisely, intolerantly, cuttingly, stringently, caustically, sparely, oppressively, rigorously, shortly, grimly, intensely, tartly, keenly, exactingly, sharply, austerely, brusquely, Acrimoniously, briskly, curtly, bluntly, acutely, abruptly, sternly, demandingly, gruffly, fundamentally, frostily, icily, Rawly, severely, imperially, crisply, dourly, piquantly, correctly, coolly.
vigilantly (adverb)
attentively, strictly, particularly, thoroughly, watchfully, scrupulously, cautiously, prudently, diligently, mindfully, conscientiously, providently, alertly, exactingly, thoughtfully, heedfully, fastidiously, fussily, carefully, precisely, vigilantly.

adv.

accurately (adverb)
flawlessly, exactly, scrupulously, precisely.
carefully (adverb)
delicately, conscientiously, vigilantly, thoroughly, providently, rigorously, watchfully, fastidiously, thoughtfully, particularly, attentively, prudently, heedfully, correctly.
closely (adverb)
sharply, strictly, mindfully.
fastidiously (adverb)
flawlessly, diligently, delicately, methodically, particularly, fastidiously, primly, properly, carefully, perspicaciously, squeamishly, scrupulously, priggishly, daintily, Hypercritically, conscientiously, fussily, accurately.
methodically (adverb)
schematically, systematically, programmatically, procedurally, tactically, technically, mechanically.
precisely (adverb)
exactly, rightly, definitely.
scrupulously (adverb)
accurately.
severely (adverb)
matter-of-factly, dryly, Leanly, harshly, starkly, bleakly, critically, strictly, acerbically, ascetically, basically, precisely, intolerantly, cuttingly, stringently, caustically, sparely, oppressively, rigorously, shortly, grimly, intensely, tartly, keenly, exactingly, sharply, austerely, brusquely, Acrimoniously, briskly, curtly, bluntly, acutely, abruptly, sternly, demandingly, gruffly, fundamentally, frostily, icily, Rawly, severely, imperially, crisply, dourly, piquantly, correctly, coolly.
thoroughly (adverb)
carefully, intensely.
vigilantly (adverb)
prudently, providently, heedfully, thoroughly, mindfully, vigilantly, cautiously, attentively, thoughtfully, alertly, watchfully.

Other synonyms:

adv
attentively, carefully, conscientiously, fastidiously, flawlessly, mindfully, providently, prudently, rigorously, scrupulously, thoroughly, thoughtfully, vigilantly, watchfully.