〜気味
Slightly, a touch of, verging onmachine translation
FormationVerb ます-form (drop ます) / noun + 気味(だ/の)
〜気味(ぎみ)describes a CURRENT state that is leaning slightly in some direction, usually an unwanted one: 風邪気味 (having slight cold symptoms), 疲れ気味 (a bit run-down), 太り気味 (verging on gaining weight). The degree is only "slightly" — the speaker senses the signs, but it isn't serious yet.
Connection: verb ます-form stem minus ます + 気味 (疲れ気味, 遅れ気味), or noun + 気味 (風邪気味). 気味 behaves like a な-adjective: at the end of a sentence it's 気味だ/気味です, and modifying a noun it's 気味の. Note that as a suffix it's read ぎみ.
Compared with 〜がち, which you've just learned: がち is FREQUENCY — a bad thing repeating many times (学校を休みがち — frequently absent from school), while 気味 is the DEGREE of the state right now (今日は風邪気味 — feeling a bit of a cold today). And 〜っぽい leans toward impressions, visible qualities (安っぽい — looks cheap), not necessarily a bodily state or an ongoing situation.
Examples
今日は少し風邪気味なので、早く帰ります。
I'm feeling a bit of a cold coming on today, so I'll go home early.
最近仕事が多くて、疲れ気味だ。
I've had a lot of work lately and I'm feeling a bit worn out.
甘いものを食べすぎて、太り気味です。
I've been eating too many sweets and I'm starting to put on weight.