Amateurish, unprofessional, unpolished, juvenile.
Of inferior quality.
A professional sports association at the lower levels of minor league organization.
A low-ranking or inferior level among groups, professions, organizations, etc.
Of poor quality; shoddy, small-time, or amateurish.
That rinky-dink shelf is likely to collapse if you fill it with books.
Crooked; underhanded.
Tinkling and tinny.
A tinkling, tinny style of music; honky-tonk.
An amateur or someone who is underqualified.
A thingy; a miscellaneous thing or object.
Deceptive or underhanded rigmarole; trickery.
A small-time crook or conman; someone who operates unethically.
Something that is not up to acceptable standards.
A bad deal; the result of a false promise.