(n.) The practice, habit, or work of an amateur.

a little learning amateurism blink blinking blinky broad hint clue coruscant coruscating coruscation cue dilettantism dilettantship firefly gentle hint gesture glimmer glimmerous glimmery glimpse glisten glistening glister glistering glitter glittering glittery glowworm half-learning hint imperfect knowledge implication index indication inkling innuendo insinuation intimation kick look nod nudge prompt scent scintilla scintillant scintillating scintillation scintillescent sciolism semi-learning shallowness shimmer shimmering shimmery sign signal slight knowledge smattering smattering of ignorance smattering of knowledge spangle spangly spark sparkle sparkling spoor stroboscopic light suggestion superficiality surface-scratching suspicion symptom telltale tinsel tinselly track twinkle twinkling twinkly vague notion whisper wink