This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of, characterized by, based on, or constituting a system.

adj. Carried on using step-by-step procedures.

adj. Purposefully regular; methodical. See Synonyms at orderly.

adj. Of or relating to classification or taxonomy.

adj. Carried out using a planned, ordered procedure

adj. Methodical, regular and orderly

adj. Of, or relating to taxonomic classification

adj. Of, relating to, or being a system

adj. Of or pertaining to system; consisting in system; methodical; formed with regular connection and adaptation or subordination of parts to each other, and to the design of the whole

adj. Proceeding according to system, or regular method

adj. Pertaining to the system of the world; cosmical.

adj. Affecting successively the different parts of the system or set of nervous fibres.

Of or pertaining to system; consisting in system; methodical; formed with regular connection and adaptation or subordination of parts to one another and to the design of the whole: as, a systematic arrangement of plants or animals; a systematic course of study.

Proceeding according to system or regular method; with intention; formal: as, a systematic writer.

Of or pertaining to the system of the universe; cosmical.

Classificatory; taxonomic; marked by, based on, or agreeable with any system of classification or nomenclature: as, a systematic treatise; systematic principles or practice; systematic zoölogy or botany. See system, 11.

In ancient prosody, of or pertaining to a system, or group of periods; constituting systems, or composed of systems.

adj. of or relating to taxonomy

adj. characterized by order and planning

"By the term systematic affinity is meant, the resemblance between species in structure and in constitution, more especially in the structure of parts which are of high physiological importance and which differ little in the allied species."

systematical   

unsystematic    haphazard    chaotic   

systematic logic    systematic botany    systematic anatomy    systematic theology    systematic zoölogy   

systemic   

systematicity    systematics    systematically   

methodical    cosmical    orderly   

Adriatic    Asiatic    Attic    Charismatic    Democratic    Hanseatic    Hippocratic    Socratic    acrobatic    adriatic   

scientific    deliberate    comprehensive    thorough    extensive    philosophical    methodical